SSTO Lunar Ascent with Linear Tangent Guidance

The following example implements a minimum time, single-stage to orbit ascent problem for launching from the lunar surface. Unlike the SSTO Earth Ascent example, here we use knowledge of the solution to simplify the optimization.

Instead of optimizing the thrust angle at any point in time as a dynamic control, we use our knowledge that the form of the solution is a linear tangent. See section 4.6 of Longiski¹ for more explanation. In short, we've simplified the problem by finding the optimal value of $\theta$ at many points into optimizing the value of just two scalar parameters, $a$ and $b$.

$$\theta = \arctan{\left(a * t + b\right)}$$

Implementing this modified control scheme requires only a few changes. Rather than declaring $\theta$ as a controllable parameter for the ODE system, we implement a new component, LinearTangentGuidanceComp that accepts $a$ and $b$ as parameters to be optimized. It calculates $\theta$, which is then connected to the equations of motion component.

Extended Design Structure Matrix

In the XDSM for the ODE system for the SSTO linear tangent problem, the only significant change is that we have a new component, guidance, which accepts $a$, $b$, and $time$, and computes $\theta$.

Solving the problem

script

import numpy as np
import matplotlib.pyplot as plt
import openmdao.api as om
from openmdao.utils.assert_utils import assert_near_equal
import dymos as dm
from dymos.examples.plotting import plot_results

g = 1.61544  # lunar gravity, m/s**2

class LaunchVehicle2DEOM(om.ExplicitComponent):
    """
    Simple 2D Cartesian Equations of Motion for a launch vehicle subject to thrust and drag.
    """
    def initialize(self):
        self.options.declare('num_nodes', types=int)

    def setup(self):
        nn = self.options['num_nodes']

        # Inputs
        self.add_input('vx',
                       val=np.zeros(nn),
                       desc='x velocity',
                       units='m/s')

        self.add_input('vy',
                       val=np.zeros(nn),
                       desc='y velocity',
                       units='m/s')

        self.add_input('m',
                       val=np.zeros(nn),
                       desc='mass',
                       units='kg')

        self.add_input('theta',
                       val=np.zeros(nn),
                       desc='pitch angle',
                       units='rad')

        self.add_input('thrust',
                       val=2100000 * np.ones(nn),
                       desc='thrust',
                       units='N')

        self.add_input('Isp',
                       val=265.2 * np.ones(nn),
                       desc='specific impulse',
                       units='s')

        # Outputs
        self.add_output('xdot',
                        val=np.zeros(nn),
                        desc='velocity component in x',
                        units='m/s')

        self.add_output('ydot',
                        val=np.zeros(nn),
                        desc='velocity component in y',
                        units='m/s')

        self.add_output('vxdot',
                        val=np.zeros(nn),
                        desc='x acceleration magnitude',
                        units='m/s**2')

        self.add_output('vydot',
                        val=np.zeros(nn),
                        desc='y acceleration magnitude',
                        units='m/s**2')

        self.add_output('mdot',
                        val=np.zeros(nn),
                        desc='mass rate of change',
                        units='kg/s')

        # Setup partials
        ar = np.arange(self.options['num_nodes'])

        self.declare_partials(of='xdot', wrt='vx', rows=ar, cols=ar, val=1.0)
        self.declare_partials(of='ydot', wrt='vy', rows=ar, cols=ar, val=1.0)

        self.declare_partials(of='vxdot', wrt='vx', rows=ar, cols=ar)
        self.declare_partials(of='vxdot', wrt='m', rows=ar, cols=ar)
        self.declare_partials(of='vxdot', wrt='theta', rows=ar, cols=ar)
        self.declare_partials(of='vxdot', wrt='thrust', rows=ar, cols=ar)

        self.declare_partials(of='vydot', wrt='m', rows=ar, cols=ar)
        self.declare_partials(of='vydot', wrt='theta', rows=ar, cols=ar)
        self.declare_partials(of='vydot', wrt='vy', rows=ar, cols=ar)
        self.declare_partials(of='vydot', wrt='thrust', rows=ar, cols=ar)

        self.declare_partials(of='mdot', wrt='thrust', rows=ar, cols=ar)
        self.declare_partials(of='mdot', wrt='Isp', rows=ar, cols=ar)

    def compute(self, inputs, outputs):
        theta = inputs['theta']
        cos_theta = np.cos(theta)
        sin_theta = np.sin(theta)
        vx = inputs['vx']
        vy = inputs['vy']
        m = inputs['m']
        F_T = inputs['thrust']
        Isp = inputs['Isp']

        outputs['xdot'] = vx
        outputs['ydot'] = vy
        outputs['vxdot'] = F_T * cos_theta / m
        outputs['vydot'] = F_T * sin_theta / m - g
        outputs['mdot'] = -F_T / (g * Isp)

    def compute_partials(self, inputs, jacobian):
        theta = inputs['theta']
        cos_theta = np.cos(theta)
        sin_theta = np.sin(theta)
        m = inputs['m']
        F_T = inputs['thrust']
        Isp = inputs['Isp']

        # jacobian['vxdot', 'vx'] = -CDA * rho * vx / m
        jacobian['vxdot', 'm'] = -(F_T * cos_theta) / m ** 2
        jacobian['vxdot', 'theta'] = -(F_T / m) * sin_theta
        jacobian['vxdot', 'thrust'] = cos_theta / m

        # jacobian['vydot', 'vy'] = -CDA * rho * vy / m
        jacobian['vydot', 'm'] = -(F_T * sin_theta) / m ** 2
        jacobian['vydot', 'theta'] = (F_T / m) * cos_theta
        jacobian['vydot', 'thrust'] = sin_theta / m

        jacobian['mdot', 'thrust'] = -1.0 / (g * Isp)
        jacobian['mdot', 'Isp'] = F_T / (g * Isp ** 2)

class LinearTangentGuidanceComp(om.ExplicitComponent):
    """ Compute pitch angle from static controls governing linear expression for
        pitch angle tangent as function of time.
    """

    def initialize(self):
        self.options.declare('num_nodes', types=int)

    def setup(self):
        nn = self.options['num_nodes']

        self.add_input('a_ctrl',
                       val=np.zeros(nn),
                       desc='linear tangent slope',
                       units='1/s')

        self.add_input('b_ctrl',
                       val=np.zeros(nn),
                       desc='tangent of theta at t=0',
                       units=None)

        self.add_input('time_phase',
                       val=np.zeros(nn),
                       desc='time',
                       units='s')

        self.add_output('theta',
                        val=np.zeros(nn),
                        desc='pitch angle',
                        units='rad')

        # Setup partials
        arange = np.arange(self.options['num_nodes'])

        self.declare_partials(of='theta', wrt='a_ctrl', rows=arange, cols=arange, val=1.0)
        self.declare_partials(of='theta', wrt='b_ctrl', rows=arange, cols=arange, val=1.0)
        self.declare_partials(of='theta', wrt='time_phase', rows=arange, cols=arange, val=1.0)

    def compute(self, inputs, outputs):
        a = inputs['a_ctrl']
        b = inputs['b_ctrl']
        t = inputs['time_phase']
        outputs['theta'] = np.arctan(a * t + b)

    def compute_partials(self, inputs, jacobian):
        a = inputs['a_ctrl']
        b = inputs['b_ctrl']
        t = inputs['time_phase']

        x = a * t + b
        denom = x ** 2 + 1.0

        jacobian['theta', 'a_ctrl'] = t / denom
        jacobian['theta', 'b_ctrl'] = 1.0 / denom
        jacobian['theta', 'time_phase'] = a / denom

class LaunchVehicleLinearTangentODE(om.Group):
    """
    The LaunchVehicleLinearTangentODE for this case consists of a guidance component and
    the EOM.  Guidance is simply an OpenMDAO ExecComp which computes the arctangent of the
    tan_theta variable.
    """
    def initialize(self):
        self.options.declare('num_nodes', types=int,
                             desc='Number of nodes to be evaluated in the RHS')

    def setup(self):
        nn = self.options['num_nodes']
        self.add_subsystem('guidance', LinearTangentGuidanceComp(num_nodes=nn))
        self.add_subsystem('eom', LaunchVehicle2DEOM(num_nodes=nn))
        self.connect('guidance.theta', 'eom.theta')

#
# Setup and solve the optimal control problem
#
p = om.Problem(model=om.Group())

p.driver = om.pyOptSparseDriver()
p.driver.declare_coloring()

traj = dm.Trajectory()
p.model.add_subsystem('traj', traj)

phase = dm.Phase(ode_class=LaunchVehicleLinearTangentODE,
                 transcription=dm.GaussLobatto(num_segments=10, order=5, compressed=True))

traj.add_phase('phase0', phase)

phase.set_time_options(initial_bounds=(0, 0), duration_bounds=(10, 1000),
                       targets=['guidance.time_phase'])

phase.add_state('x', fix_initial=True, lower=0, rate_source='eom.xdot', units='m')
phase.add_state('y', fix_initial=True, lower=0, rate_source='eom.ydot', units='m')
phase.add_state('vx', fix_initial=True, lower=0, rate_source='eom.vxdot', targets=['eom.vx'], units='m/s')
phase.add_state('vy', fix_initial=True, rate_source='eom.vydot', targets=['eom.vy'], units='m/s')
phase.add_state('m', fix_initial=True, rate_source='eom.mdot', targets=['eom.m'], units='kg')

phase.add_boundary_constraint('y', loc='final', equals=1.85E5, linear=True)
phase.add_boundary_constraint('vx', loc='final', equals=1627.0)
phase.add_boundary_constraint('vy', loc='final', equals=0)

phase.add_parameter('a_ctrl', units='1/s', opt=True, targets=['guidance.a_ctrl'])
phase.add_parameter('b_ctrl', units=None, opt=True, targets=['guidance.b_ctrl'])
phase.add_parameter('thrust', units='N', opt=False, val=3.0 * 50000.0 * 1.61544, targets=['eom.thrust'])
phase.add_parameter('Isp', units='s', opt=False, val=1.0E6, targets=['eom.Isp'])

phase.add_objective('time', index=-1, scaler=0.01)

p.model.linear_solver = om.DirectSolver()

phase.add_timeseries_output('guidance.theta', units='deg')

p.setup(check=True)

p['traj.phase0.t_initial'] = 0.0
p['traj.phase0.t_duration'] = 500.0
p['traj.phase0.states:x'] = phase.interpolate(ys=[0, 350000.0], nodes='state_input')
p['traj.phase0.states:y'] = phase.interpolate(ys=[0, 185000.0], nodes='state_input')
p['traj.phase0.states:vx'] = phase.interpolate(ys=[0, 1627.0], nodes='state_input')
p['traj.phase0.states:vy'] = phase.interpolate(ys=[1.0E-6, 0], nodes='state_input')
p['traj.phase0.states:m'] = phase.interpolate(ys=[50000, 50000], nodes='state_input')
p['traj.phase0.parameters:a_ctrl'] = -0.01
p['traj.phase0.parameters:b_ctrl'] = 3.0

dm.run_problem(p)

#
# Check the results.
#


#
# Get the explitly simulated results
#
exp_out = traj.simulate()

#
# Plot the results
#
plot_results([('traj.phase0.timeseries.states:x', 'traj.phase0.timeseries.states:y',
               'range (m)', 'altitude (m)'),
              ('traj.phase0.timeseries.time', 'traj.phase0.timeseries.theta',
               'range (m)', 'altitude (m)')],
             title='Single Stage to Orbit Solution Using Linear Tangent Guidance',
             p_sol=p, p_sim=exp_out)

plt.show()

output

--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
Message: 'checking out_of_order'
Arguments: ()
Message: 'checking out_of_order'
Arguments: ()
INFO: checking out_of_order
--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
Message: 'checking system'
Arguments: ()
Message: 'checking system'
Arguments: ()
INFO: checking system
--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
Message: 'checking solvers'
Arguments: ()
Message: 'checking solvers'
Arguments: ()
INFO: checking solvers
--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
Message: 'checking dup_inputs'
Arguments: ()
Message: 'checking dup_inputs'
Arguments: ()
INFO: checking dup_inputs
--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
Message: 'checking missing_recorders'
Arguments: ()
Message: 'checking missing_recorders'
Arguments: ()
INFO: checking missing_recorders
--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1893, in check_config
    _all_checks[c](self, logger)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1893, in check_config
    _all_checks[c](self, logger)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/error_checking/check_config.py", line 503, in _check_missing_recorders
    logger.warning(msg)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/error_checking/check_config.py", line 503, in _check_missing_recorders
    logger.warning(msg)
Message: 'The Problem has no recorder of any kind attached'
Arguments: ()
Message: 'The Problem has no recorder of any kind attached'
Arguments: ()
WARNING: The Problem has no recorder of any kind attached
--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
Message: 'checking comp_has_no_outputs'
Arguments: ()
Message: 'checking comp_has_no_outputs'
Arguments: ()
INFO: checking comp_has_no_outputs
--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1893, in check_config
    _all_checks[c](self, logger)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1893, in check_config
    _all_checks[c](self, logger)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/error_checking/check_config.py", line 359, in _check_comp_has_no_outputs
    logger.warning(''.join(["The following Components do not have any outputs:\n"] + msg))
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/error_checking/check_config.py", line 359, in _check_comp_has_no_outputs
    logger.warning(''.join(["The following Components do not have any outputs:\n"] + msg))
Message: 'The following Components do not have any outputs:\n   traj.phases.phase0.continuity_comp\n'
Arguments: ()
Message: 'The following Components do not have any outputs:\n   traj.phases.phase0.continuity_comp\n'
Arguments: ()
WARNING: The following Components do not have any outputs:
   traj.phases.phase0.continuity_comp

--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 126, in run_problem
    problem.final_setup()  # make sure command line option hook has a chance to run
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
Message: 'checking auto_ivc_warnings'
Arguments: ()
Message: 'checking auto_ivc_warnings'
Arguments: ()
INFO: checking auto_ivc_warnings
--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
Message: 'checking out_of_order'
Arguments: ()
Message: 'checking out_of_order'
Arguments: ()
INFO: checking out_of_order
--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
Message: 'checking system'
Arguments: ()
Message: 'checking system'
Arguments: ()
INFO: checking system
--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
Message: 'checking solvers'
Arguments: ()
Message: 'checking solvers'
Arguments: ()
INFO: checking solvers
--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
Message: 'checking dup_inputs'
Arguments: ()
Message: 'checking dup_inputs'
Arguments: ()
INFO: checking dup_inputs
--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
Message: 'checking missing_recorders'
Arguments: ()
Message: 'checking missing_recorders'
Arguments: ()
INFO: checking missing_recorders
--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1893, in check_config
    _all_checks[c](self, logger)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1893, in check_config
    _all_checks[c](self, logger)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/error_checking/check_config.py", line 503, in _check_missing_recorders
    logger.warning(msg)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/error_checking/check_config.py", line 503, in _check_missing_recorders
    logger.warning(msg)
Message: 'The Problem has no recorder of any kind attached'
Arguments: ()
Message: 'The Problem has no recorder of any kind attached'
Arguments: ()
WARNING: The Problem has no recorder of any kind attached
--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
Message: 'checking comp_has_no_outputs'
Arguments: ()
Message: 'checking comp_has_no_outputs'
Arguments: ()
INFO: checking comp_has_no_outputs
--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1893, in check_config
    _all_checks[c](self, logger)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1893, in check_config
    _all_checks[c](self, logger)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/error_checking/check_config.py", line 359, in _check_comp_has_no_outputs
    logger.warning(''.join(["The following Components do not have any outputs:\n"] + msg))
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/error_checking/check_config.py", line 359, in _check_comp_has_no_outputs
    logger.warning(''.join(["The following Components do not have any outputs:\n"] + msg))
Message: 'The following Components do not have any outputs:\n   traj.phases.phase0.continuity_comp\n'
Arguments: ()
Message: 'The following Components do not have any outputs:\n   traj.phases.phase0.continuity_comp\n'
Arguments: ()
WARNING: The following Components do not have any outputs:
   traj.phases.phase0.continuity_comp

--- Logging error ---
--- Logging error ---
Traceback (most recent call last):
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/logging/__init__.py", line 1084, in emit
    stream.write(msg + self.terminator)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 63, in write
    f.write(text)
ValueError: I/O operation on closed file.
ValueError: I/O operation on closed file.
Call stack:
Call stack:
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/bin/testflo", line 8, in <module>
    sys.exit(main())
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 213, in main
    retval = run_pipeline(tests, pipeline)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/main.py", line 77, in run_pipeline
    for result in iters[-1]:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/summary.py", line 30, in get_iter
    for test in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/printer.py", line 28, in get_iter
    for result in input_iter:
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/runner.py", line 58, in get_iter
    result = test.run(self._queue)
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 317, in run
    status, expected2 = _try_call(getattr(parent, funcname))
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/miniconda/envs/PY3.8/lib/python3.8/site-packages/testflo/test.py", line 425, in _try_call
    func()
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/utils/doc_utils.py", line 119, in wrapped
    method(self)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/examples/ssto/doc/test_doc_ssto_linear_tangent_guidance.py", line 273, in test_doc_ssto_linear_tangent_guidance
    dm.run_problem(p)
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/dymos/run_problem.py", line 132, in run_problem
    problem.run_driver()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 659, in run_driver
    self.final_setup()
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 998, in final_setup
    self.check_config(logger, checks=checks)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
  File "/home/travis/build/OpenMDAO/dymos/OpenMDAO/openmdao/core/problem.py", line 1892, in check_config
    logger.info('checking %s' % c)
Message: 'checking auto_ivc_warnings'
Arguments: ()
Message: 'checking auto_ivc_warnings'
Arguments: ()
INFO: checking auto_ivc_warnings
Full total jacobian was computed 3 times, taking 0.148264 seconds.
Total jacobian shape: (101, 104) 


Jacobian shape: (101, 104)  (16.50% nonzero)
FWD solves: 22   REV solves: 0
Total colors vs. total size: 22 vs 104  (78.8% improvement)

Sparsity computed using tolerance: 1e-25
Time to compute sparsity: 0.148264 sec.
Time to compute coloring: 0.006016 sec.


Optimization Problem -- Optimization using pyOpt_sparse
================================================================================
    Objective Function: _objfunc

    Solution: 
--------------------------------------------------------------------------------
    Total Time:                    0.1354
       User Objective Time :       0.0186
       User Sensitivity Time :     0.0656
       Interface Time :            0.0327
       Opt Solver Time:            0.0185
    Calls to Objective Function :       6
    Calls to Sens Function :            5


   Objectives
      Index  Name                                    Value          Optimum
          0  traj.phases.phase0.time.time     4.817168E+00     0.000000E+00

   Variables (c - continuous, i - integer, d - discrete)
      Index  Name                                           Type      Lower Bound            Value      Upper Bound     Status
          0  traj.phase0.parameters:a_ctrl_0                   c    -1.000000E+21    -8.280511E-03     1.000000E+21           
          1  traj.phase0.parameters:b_ctrl_0                   c    -1.000000E+21     2.747399E+00     1.000000E+21           
          2  traj.phases.phase0.time_extents.t_initial_0       c     0.000000E+00    -3.048547E-21     0.000000E+00         lu
          3  traj.phases.phase0.time_extents.t_duration_0      c     1.000000E+01     4.817168E+02     1.000000E+03           
          4  traj.phases.phase0.indep_states.states:x_0        c     0.000000E+00     4.914075E+02     1.000000E+21           
          5  traj.phases.phase0.indep_states.states:x_1        c     0.000000E+00     2.010769E+03     1.000000E+21           
          6  traj.phases.phase0.indep_states.states:x_2        c     0.000000E+00     4.632596E+03     1.000000E+21           
          7  traj.phases.phase0.indep_states.states:x_3        c     0.000000E+00     8.441819E+03     1.000000E+21           
          8  traj.phases.phase0.indep_states.states:x_4        c     0.000000E+00     1.353576E+04     1.000000E+21           
          9  traj.phases.phase0.indep_states.states:x_5        c     0.000000E+00     2.002641E+04     1.000000E+21           
         10  traj.phases.phase0.indep_states.states:x_6        c     0.000000E+00     2.804305E+04     1.000000E+21           
         11  traj.phases.phase0.indep_states.states:x_7        c     0.000000E+00     3.773482E+04     1.000000E+21           
         12  traj.phases.phase0.indep_states.states:x_8        c     0.000000E+00     4.927264E+04     1.000000E+21           
         13  traj.phases.phase0.indep_states.states:x_9        c     0.000000E+00     6.284916E+04     1.000000E+21           
         14  traj.phases.phase0.indep_states.states:x_10       c     0.000000E+00     7.867365E+04     1.000000E+21           
         15  traj.phases.phase0.indep_states.states:x_11       c     0.000000E+00     9.695801E+04     1.000000E+21           
         16  traj.phases.phase0.indep_states.states:x_12       c     0.000000E+00     1.178897E+05     1.000000E+21           
         17  traj.phases.phase0.indep_states.states:x_13       c     0.000000E+00     1.415942E+05     1.000000E+21           
         18  traj.phases.phase0.indep_states.states:x_14       c     0.000000E+00     1.681011E+05     1.000000E+21           
         19  traj.phases.phase0.indep_states.states:x_15       c     0.000000E+00     1.973350E+05     1.000000E+21           
         20  traj.phases.phase0.indep_states.states:x_16       c     0.000000E+00     2.291382E+05     1.000000E+21           
         21  traj.phases.phase0.indep_states.states:x_17       c     0.000000E+00     2.633083E+05     1.000000E+21           
         22  traj.phases.phase0.indep_states.states:x_18       c     0.000000E+00     2.996321E+05     1.000000E+21           
         23  traj.phases.phase0.indep_states.states:x_19       c     0.000000E+00     3.379071E+05     1.000000E+21           
         24  traj.phases.phase0.indep_states.states:y_0        c     0.000000E+00     8.484836E+02     1.000000E+21           
         25  traj.phases.phase0.indep_states.states:y_1        c     0.000000E+00     3.376666E+03     1.000000E+21           
         26  traj.phases.phase0.indep_states.states:y_2        c     0.000000E+00     7.554202E+03     1.000000E+21           
         27  traj.phases.phase0.indep_states.states:y_3        c     0.000000E+00     1.334336E+04     1.000000E+21           
         28  traj.phases.phase0.indep_states.states:y_4        c     0.000000E+00     2.069660E+04     1.000000E+21           
         29  traj.phases.phase0.indep_states.states:y_5        c     0.000000E+00     2.955320E+04     1.000000E+21           
         30  traj.phases.phase0.indep_states.states:y_6        c     0.000000E+00     3.983444E+04     1.000000E+21           
         31  traj.phases.phase0.indep_states.states:y_7        c     0.000000E+00     5.143680E+04     1.000000E+21           
         32  traj.phases.phase0.indep_states.states:y_8        c     0.000000E+00     6.422234E+04     1.000000E+21           
         33  traj.phases.phase0.indep_states.states:y_9        c     0.000000E+00     7.800565E+04     1.000000E+21           
         34  traj.phases.phase0.indep_states.states:y_10       c     0.000000E+00     9.253734E+04     1.000000E+21           
         35  traj.phases.phase0.indep_states.states:y_11       c     0.000000E+00     1.074866E+05     1.000000E+21           
         36  traj.phases.phase0.indep_states.states:y_12       c     0.000000E+00     1.224307E+05     1.000000E+21           
         37  traj.phases.phase0.indep_states.states:y_13       c     0.000000E+00     1.368636E+05     1.000000E+21           
         38  traj.phases.phase0.indep_states.states:y_14       c     0.000000E+00     1.502346E+05     1.000000E+21           
         39  traj.phases.phase0.indep_states.states:y_15       c     0.000000E+00     1.620065E+05     1.000000E+21           
         40  traj.phases.phase0.indep_states.states:y_16       c     0.000000E+00     1.717075E+05     1.000000E+21           
         41  traj.phases.phase0.indep_states.states:y_17       c     0.000000E+00     1.789562E+05     1.000000E+21           
         42  traj.phases.phase0.indep_states.states:y_18       c     0.000000E+00     1.834600E+05     1.000000E+21           
         43  traj.phases.phase0.indep_states.states:y_19       c     0.000000E+00     1.850000E+05     1.000000E+21           
         44  traj.phases.phase0.indep_states.states:vx_0       c     0.000000E+00     4.125858E+01     1.000000E+21           
         45  traj.phases.phase0.indep_states.states:vx_1       c     0.000000E+00     8.541812E+01     1.000000E+21           
         46  traj.phases.phase0.indep_states.states:vx_2       c     0.000000E+00     1.328751E+02     1.000000E+21           
         47  traj.phases.phase0.indep_states.states:vx_3       c     0.000000E+00     1.841006E+02     1.000000E+21           
         48  traj.phases.phase0.indep_states.states:vx_4       c     0.000000E+00     2.396544E+02     1.000000E+21           
         49  traj.phases.phase0.indep_states.states:vx_5       c     0.000000E+00     3.001984E+02     1.000000E+21           
         50  traj.phases.phase0.indep_states.states:vx_6       c     0.000000E+00     3.665047E+02     1.000000E+21           
         51  traj.phases.phase0.indep_states.states:vx_7       c     0.000000E+00     4.394465E+02     1.000000E+21           
         52  traj.phases.phase0.indep_states.states:vx_8       c     0.000000E+00     5.199484E+02     1.000000E+21           
         53  traj.phases.phase0.indep_states.states:vx_9       c     0.000000E+00     6.088531E+02     1.000000E+21           
         54  traj.phases.phase0.indep_states.states:vx_10      c     0.000000E+00     7.066397E+02     1.000000E+21           
         55  traj.phases.phase0.indep_states.states:vx_11      c     0.000000E+00     8.129513E+02     1.000000E+21           
         56  traj.phases.phase0.indep_states.states:vx_12      c     0.000000E+00     9.260354E+02     1.000000E+21           
         57  traj.phases.phase0.indep_states.states:vx_13      c     0.000000E+00     1.042511E+03     1.000000E+21           
         58  traj.phases.phase0.indep_states.states:vx_14      c     0.000000E+00     1.157984E+03     1.000000E+21           
         59  traj.phases.phase0.indep_states.states:vx_15      c     0.000000E+00     1.268376E+03     1.000000E+21           
         60  traj.phases.phase0.indep_states.states:vx_16      c     0.000000E+00     1.371019E+03     1.000000E+21           
         61  traj.phases.phase0.indep_states.states:vx_17      c     0.000000E+00     1.464847E+03     1.000000E+21           
         62  traj.phases.phase0.indep_states.states:vx_18      c     0.000000E+00     1.549945E+03     1.000000E+21           
         63  traj.phases.phase0.indep_states.states:vx_19      c     0.000000E+00     1.627000E+03     1.000000E+21           
         64  traj.phases.phase0.indep_states.states:vy_0       c    -1.000000E+21     7.028492E+01     1.000000E+21           
         65  traj.phases.phase0.indep_states.states:vy_1       c    -1.000000E+21     1.394373E+02     1.000000E+21           
         66  traj.phases.phase0.indep_states.states:vy_2       c    -1.000000E+21     2.071905E+02     1.000000E+21           
         67  traj.phases.phase0.indep_states.states:vy_3       c    -1.000000E+21     2.731933E+02     1.000000E+21           
         68  traj.phases.phase0.indep_states.states:vy_4       c    -1.000000E+21     3.369762E+02     1.000000E+21           
         69  traj.phases.phase0.indep_states.states:vy_5       c    -1.000000E+21     3.979035E+02     1.000000E+21           
         70  traj.phases.phase0.indep_states.states:vy_6       c    -1.000000E+21     4.551033E+02     1.000000E+21           
         71  traj.phases.phase0.indep_states.states:vy_7       c    -1.000000E+21     5.073683E+02     1.000000E+21           
         72  traj.phases.phase0.indep_states.states:vy_8       c    -1.000000E+21     5.530247E+02     1.000000E+21           
         73  traj.phases.phase0.indep_states.states:vy_9       c    -1.000000E+21     5.897782E+02     1.000000E+21           
         74  traj.phases.phase0.indep_states.states:vy_10      c    -1.000000E+21     6.145998E+02     1.000000E+21           
         75  traj.phases.phase0.indep_states.states:vy_11      c    -1.000000E+21     6.238029E+02     1.000000E+21           
         76  traj.phases.phase0.indep_states.states:vy_12      c    -1.000000E+21     6.135685E+02     1.000000E+21           
         77  traj.phases.phase0.indep_states.states:vy_13      c    -1.000000E+21     5.810350E+02     1.000000E+21           
         78  traj.phases.phase0.indep_states.states:vy_14      c    -1.000000E+21     5.254906E+02     1.000000E+21           
         79  traj.phases.phase0.indep_states.states:vy_15      c    -1.000000E+21     4.487217E+02     1.000000E+21           
         80  traj.phases.phase0.indep_states.states:vy_16      c    -1.000000E+21     3.541772E+02     1.000000E+21           
         81  traj.phases.phase0.indep_states.states:vy_17      c    -1.000000E+21     2.457161E+02     1.000000E+21           
         82  traj.phases.phase0.indep_states.states:vy_18      c    -1.000000E+21     1.267600E+02     1.000000E+21           
         83  traj.phases.phase0.indep_states.states:vy_19      c    -1.000000E+21     2.646978E-23     1.000000E+21           
         84  traj.phases.phase0.indep_states.states:m_0        c    -1.000000E+21     4.999639E+04     1.000000E+21           
         85  traj.phases.phase0.indep_states.states:m_1        c    -1.000000E+21     4.999277E+04     1.000000E+21           
         86  traj.phases.phase0.indep_states.states:m_2        c    -1.000000E+21     4.998916E+04     1.000000E+21           
         87  traj.phases.phase0.indep_states.states:m_3        c    -1.000000E+21     4.998555E+04     1.000000E+21           
         88  traj.phases.phase0.indep_states.states:m_4        c    -1.000000E+21     4.998194E+04     1.000000E+21           
         89  traj.phases.phase0.indep_states.states:m_5        c    -1.000000E+21     4.997832E+04     1.000000E+21           
         90  traj.phases.phase0.indep_states.states:m_6        c    -1.000000E+21     4.997471E+04     1.000000E+21           
         91  traj.phases.phase0.indep_states.states:m_7        c    -1.000000E+21     4.997110E+04     1.000000E+21           
         92  traj.phases.phase0.indep_states.states:m_8        c    -1.000000E+21     4.996748E+04     1.000000E+21           
         93  traj.phases.phase0.indep_states.states:m_9        c    -1.000000E+21     4.996387E+04     1.000000E+21           
         94  traj.phases.phase0.indep_states.states:m_10       c    -1.000000E+21     4.996026E+04     1.000000E+21           
         95  traj.phases.phase0.indep_states.states:m_11       c    -1.000000E+21     4.995665E+04     1.000000E+21           
         96  traj.phases.phase0.indep_states.states:m_12       c    -1.000000E+21     4.995303E+04     1.000000E+21           
         97  traj.phases.phase0.indep_states.states:m_13       c    -1.000000E+21     4.994942E+04     1.000000E+21           
         98  traj.phases.phase0.indep_states.states:m_14       c    -1.000000E+21     4.994581E+04     1.000000E+21           
         99  traj.phases.phase0.indep_states.states:m_15       c    -1.000000E+21     4.994219E+04     1.000000E+21           
        100  traj.phases.phase0.indep_states.states:m_16       c    -1.000000E+21     4.993858E+04     1.000000E+21           
        101  traj.phases.phase0.indep_states.states:m_17       c    -1.000000E+21     4.993497E+04     1.000000E+21           
        102  traj.phases.phase0.indep_states.states:m_18       c    -1.000000E+21     4.993136E+04     1.000000E+21           
        103  traj.phases.phase0.indep_states.states:m_19       c    -1.000000E+21     4.992774E+04     1.000000E+21           

   Constraints (i - inequality, e - equality)
      Index  Name                                                         Type          Lower           Value           Upper    Status  Lagrange Multiplier (N/A)
          0  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00    8.557009E-14    0.000000E+00              9.00000E+100
          1  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00    0.000000E+00    0.000000E+00              9.00000E+100
          2  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00    0.000000E+00    0.000000E+00              9.00000E+100
          3  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00    0.000000E+00    0.000000E+00              9.00000E+100
          4  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00    1.369121E-12    0.000000E+00              9.00000E+100
          5  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00   -5.476486E-12    0.000000E+00              9.00000E+100
          6  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00    2.738243E-12    0.000000E+00              9.00000E+100
          7  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00   -4.107364E-12    0.000000E+00              9.00000E+100
          8  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00   -2.738243E-12    0.000000E+00              9.00000E+100
          9  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00    1.095297E-11    0.000000E+00              9.00000E+100
         10  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00   -1.916770E-11    0.000000E+00              9.00000E+100
         11  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00    5.476486E-12    0.000000E+00              9.00000E+100
         12  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00   -2.738243E-11    0.000000E+00              9.00000E+100
         13  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00    6.297959E-11    0.000000E+00              9.00000E+100
         14  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00   -5.476486E-12    0.000000E+00              9.00000E+100
         15  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00   -3.833540E-11    0.000000E+00              9.00000E+100
         16  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00   -5.476486E-12    0.000000E+00              9.00000E+100
         17  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00   -1.642946E-11    0.000000E+00              9.00000E+100
         18  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00    0.000000E+00    0.000000E+00              9.00000E+100
         19  traj.phases.phase0.collocation_constraint.defects:x             e   0.000000E+00   -2.738243E-11    0.000000E+00              9.00000E+100
         20  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00   -1.711402E-13    0.000000E+00              9.00000E+100
         21  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00   -3.422804E-13    0.000000E+00              9.00000E+100
         22  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00    6.845607E-13    0.000000E+00              9.00000E+100
         23  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00    0.000000E+00    0.000000E+00              9.00000E+100
         24  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00    1.369121E-12    0.000000E+00              9.00000E+100
         25  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00   -6.845607E-12    0.000000E+00              9.00000E+100
         26  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00   -2.738243E-12    0.000000E+00              9.00000E+100
         27  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00    4.107364E-12    0.000000E+00              9.00000E+100
         28  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00   -8.214729E-12    0.000000E+00              9.00000E+100
         29  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00    5.476486E-12    0.000000E+00              9.00000E+100
         30  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00    2.738243E-12    0.000000E+00              9.00000E+100
         31  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00    1.642946E-11    0.000000E+00              9.00000E+100
         32  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00    0.000000E+00    0.000000E+00              9.00000E+100
         33  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00    2.738243E-11    0.000000E+00              9.00000E+100
         34  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00   -5.476486E-11    0.000000E+00              9.00000E+100
         35  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00    1.095297E-11    0.000000E+00              9.00000E+100
         36  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00    5.750310E-11    0.000000E+00              9.00000E+100
         37  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00    3.285892E-11    0.000000E+00              9.00000E+100
         38  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00   -4.655013E-11    0.000000E+00              9.00000E+100
         39  traj.phases.phase0.collocation_constraint.defects:y             e   0.000000E+00    8.642579E-11    0.000000E+00              9.00000E+100
         40  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00    5.348131E-15    0.000000E+00              9.00000E+100
         41  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00    2.674065E-14    0.000000E+00              9.00000E+100
         42  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00   -3.208878E-14    0.000000E+00              9.00000E+100
         43  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00    3.208878E-14    0.000000E+00              9.00000E+100
         44  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00   -3.208878E-14    0.000000E+00              9.00000E+100
         45  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00    1.069626E-14    0.000000E+00              9.00000E+100
         46  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00   -3.208878E-14    0.000000E+00              9.00000E+100
         47  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00   -6.417757E-14    0.000000E+00              9.00000E+100
         48  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00    1.176589E-13    0.000000E+00              9.00000E+100
         49  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00    1.497477E-13    0.000000E+00              9.00000E+100
         50  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00    2.139252E-14    0.000000E+00              9.00000E+100
         51  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00    8.557009E-14    0.000000E+00              9.00000E+100
         52  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00   -2.139252E-13    0.000000E+00              9.00000E+100
         53  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00   -6.417757E-14    0.000000E+00              9.00000E+100
         54  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00    6.417757E-14    0.000000E+00              9.00000E+100
         55  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00   -2.353178E-13    0.000000E+00              9.00000E+100
         56  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00    3.850654E-13    0.000000E+00              9.00000E+100
         57  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00   -7.059533E-13    0.000000E+00              9.00000E+100
         58  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00    2.781028E-13    0.000000E+00              9.00000E+100
         59  traj.phases.phase0.collocation_constraint.defects:vx            e   0.000000E+00   -2.139252E-14    0.000000E+00              9.00000E+100
         60  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00   -1.069626E-14    0.000000E+00              9.00000E+100
         61  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00   -5.348131E-14    0.000000E+00              9.00000E+100
         62  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00   -1.069626E-14    0.000000E+00              9.00000E+100
         63  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00   -4.278505E-14    0.000000E+00              9.00000E+100
         64  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00    8.557009E-14    0.000000E+00              9.00000E+100
         65  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00   -9.626635E-14    0.000000E+00              9.00000E+100
         66  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00    2.139252E-14    0.000000E+00              9.00000E+100
         67  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00    1.069626E-14    0.000000E+00              9.00000E+100
         68  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00    1.818364E-13    0.000000E+00              9.00000E+100
         69  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00   -1.764883E-13    0.000000E+00              9.00000E+100
         70  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00    6.417757E-14    0.000000E+00              9.00000E+100
         71  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00    4.011098E-14    0.000000E+00              9.00000E+100
         72  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00    0.000000E+00    0.000000E+00              9.00000E+100
         73  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00   -1.443995E-13    0.000000E+00              9.00000E+100
         74  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00    2.139252E-14    0.000000E+00              9.00000E+100
         75  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00    4.278505E-14    0.000000E+00              9.00000E+100
         76  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00   -1.069626E-14    0.000000E+00              9.00000E+100
         77  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00   -6.417757E-14    0.000000E+00              9.00000E+100
         78  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00   -2.139252E-14    0.000000E+00              9.00000E+100
         79  traj.phases.phase0.collocation_constraint.defects:vy            e   0.000000E+00    8.557009E-14    0.000000E+00              9.00000E+100
         80  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00    1.957416E-12    0.000000E+00              9.00000E+100
         81  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00   -1.259351E-11    0.000000E+00              9.00000E+100
         82  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00    2.015176E-11    0.000000E+00              9.00000E+100
         83  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00   -1.258950E-11    0.000000E+00              9.00000E+100
         84  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00    9.237559E-12    0.000000E+00              9.00000E+100
         85  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00    1.961427E-12    0.000000E+00              9.00000E+100
         86  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00   -1.805128E-11    0.000000E+00              9.00000E+100
         87  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00   -1.259351E-11    0.000000E+00              9.00000E+100
         88  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00    1.957416E-12    0.000000E+00              9.00000E+100
         89  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00    1.650968E-11    0.000000E+00              9.00000E+100
         90  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00   -1.076712E-11    0.000000E+00              9.00000E+100
         91  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00    1.965438E-12    0.000000E+00              9.00000E+100
         92  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00   -7.137080E-12    0.000000E+00              9.00000E+100
         93  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00    1.957416E-12    0.000000E+00              9.00000E+100
         94  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00    1.105325E-11    0.000000E+00              9.00000E+100
         95  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00   -1.259351E-11    0.000000E+00              9.00000E+100
         96  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00    1.390514E-13    0.000000E+00              9.00000E+100
         97  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00    1.957416E-12    0.000000E+00              9.00000E+100
         98  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00   -1.077515E-11    0.000000E+00              9.00000E+100
         99  traj.phases.phase0.collocation_constraint.defects:m             e   0.000000E+00    1.957416E-12    0.000000E+00              9.00000E+100
        100  traj.phases.phase0.final_boundary_constraints.final_value:y     e   1.850000E+05    1.850000E+05    1.850000E+05              9.00000E+100
        101  traj.phases.phase0.final_boundary_constraints.final_value:vx    e   1.627000E+03    1.627000E+03    1.627000E+03              9.00000E+100
        102  traj.phases.phase0.final_boundary_constraints.final_value:vy    e   0.000000E+00    2.646978E-23    0.000000E+00              9.00000E+100

--------------------------------------------------------------------------------


Simulating trajectory traj
Done simulating trajectory traj

plot 1

References

---

1. James M Longuski, José J Guzmán, and John E Prussing. Optimal control with aerospace applications. Springer, 2014. ↩