`colcon test` times out for unknown reason

edit

I'm trying to run package tests locally and gtest is reporting test failures due to timeout. For example:

jlangsfeld@swri-jlangsfeld-thinkpad-T560:~/Workspaces/ros2_training$ colcon test --packages-select tf2_geometry_msgs --event-handlers console_cohesion+
Starting >>> tf2_geometry_msgs
[Processing: tf2_geometry_msgs]
[Processing: tf2_geometry_msgs]
--- output: tf2_geometry_msgs
UpdateCTestConfiguration  from :/home/jlangsfeld/Workspaces/ros2_training/build/tf2_geometry_msgs/CTestConfiguration.ini
Parse Config file:/home/jlangsfeld/Workspaces/ros2_training/build/tf2_geometry_msgs/CTestConfiguration.ini
   Site: swri-jlangsfeld-thinkpad-T560
   Build name: (empty)
 Add coverage exclude regular expressions.
SetCTestConfiguration:CMakeCommand:/usr/bin/cmake
UpdateCTestConfiguration  from :/home/jlangsfeld/Workspaces/ros2_training/build/tf2_geometry_msgs/CTestConfiguration.ini
Parse Config file:/home/jlangsfeld/Workspaces/ros2_training/build/tf2_geometry_msgs/CTestConfiguration.ini
Test project /home/jlangsfeld/Workspaces/ros2_training/build/tf2_geometry_msgs
Constructing a list of tests
Done constructing a list of tests
Updating test list for fixtures
Added 0 tests to meet fixture requirements
Checking test dependency graph...
Checking test dependency graph end
test 1
    Start 1: test_tf2_geometry_msgs

1: Test command: /usr/bin/python3 "-u" "/opt/ros/dashing/share/ament_cmake_test/cmake/run_test.py" "/home/jlangsfeld/Workspaces/ros2_training/build/tf2_geometry_msgs/test_results/tf2_geometry_msgs/test_tf2_geometry_msgs.gtest.xml" "--package-name" "tf2_geometry_msgs" "--output-file" "/home/jlangsfeld/Workspaces/ros2_training/build/tf2_geometry_msgs/ament_cmake_gtest/test_tf2_geometry_msgs.txt" "--command" "/home/jlangsfeld/Workspaces/ros2_training/build/tf2_geometry_msgs/test_tf2_geometry_msgs" "--gtest_output=xml:/home/jlangsfeld/Workspaces/ros2_training/build/tf2_geometry_msgs/test_results/tf2_geometry_msgs/test_tf2_geometry_msgs.gtest.xml"
1: Test timeout computed to be: 60
1: -- run_test.py: invoking following command in '/home/jlangsfeld/Workspaces/ros2_training/src/geometry2/tf2_geometry_msgs':
1:  - /home/jlangsfeld/Workspaces/ros2_training/build/tf2_geometry_msgs/test_tf2_geometry_msgs --gtest_output=xml:/home/jlangsfeld/Workspaces/ros2_training/build/tf2_geometry_msgs/test_results/tf2_geometry_msgs/test_tf2_geometry_msgs.gtest.xml
1/1 Test #1: test_tf2_geometry_msgs ...........***Timeout  60.03 sec

0% tests passed, 1 tests failed out of 1

Label Time Summary:
gtest    =  60.03 sec*proc (1 test)

Total Test time (real) =  60.03 sec

The following tests FAILED:
          1 - test_tf2_geometry_msgs (Timeout)
Errors while running CTest
---
--- stderr: tf2_geometry_msgs
Errors while running CTest
---
Finished <<< tf2_geometry_msgs [1min 0s]        [ with test failures ]

Summary: 1 package finished [1min 0s]
  1 package had stderr output: tf2_geometry_msgs
  1 package had test failures: tf2_geometry_msgs

If I manually run the run_test.py testing command printed above or the built test executable directly it runs and finishes instantly, as expected. Why is this timeout error happening when using colcon test?