Hi. I am having the same issue. The output when I run src/ament/ament_tools/scripts/ament.py test is Start 8: test_dynamic_bridge__rmw_fastrtps_cpp 8: Test command: /usr/bin/python3 "-u" "/home/paul/ros2_ws/install/share/ament_cmake_test/cmake/run_test.py" "/home/paul/ros2_ws/build/ros1_bridge/test_results/ros1_bridge/test_dynamic_bridge__rmw_fastrtps_cpp.xunit.xml" "--package-name" "ros1_bridge" "--output-file" "/home/paul/ros2_ws/build/ros1_bridge/ament_cmake_pytest/test_dynamic_bridge__rmw_fastrtps_cpp.txt" "--env" "RMW_IMPLEMENTAION=" "--command" "/usr/bin/python3" "-u" "-m" "pytest" "/home/paul/ros2_ws/build/ros1_bridge/test_dynamic_bridge__rmw_fastrtps_cpp_.py" "-o" "cache_dir=/home/paul/ros2_ws/build/ros1_bridge/ament_cmake_pytest/test_dynamic_bridge__rmw_fastrtps_cpp/.cache" "--junit-xml=/home/paul/ros2_ws/build/ros1_bridge/test_results/ros1_bridge/test_dynamic_bridge__rmw_fastrtps_cpp.xunit.xml" "--junit-prefix=ros1_bridge" 8: Test timeout computed to be: 60 8: -- run_test.py: extra environment variables: 8: - RMW_IMPLEMENTAION= 8: -- run_test.py: invoking following command in '/home/paul/ros2_ws/src/ros2/ros1_bridge': 8: - /usr/bin/python3 -u -m pytest /home/paul/ros2_ws/build/ros1_bridge/test_dynamic_bridge__rmw_fastrtps_cpp_.py -o cache_dir=/home/paul/ros2_ws/build/ros1_bridge/ament_cmake_pytest/test_dynamic_bridge__rmw_fastrtps_cpp/.cache --junit-xml=/home/paul/ros2_ws/build/ros1_bridge/test_results/ros1_bridge/test_dynamic_bridge__rmw_fastrtps_cpp.xunit.xml --junit-prefix=ros1_bridge 8: usage: pytest.py [options] [file_or_dir] [file_or_dir] [...] 8: pytest.py: error: unrecognized arguments: -o cache_dir=/home/paul/ros2_ws/build/ros1_bridge/ament_cmake_pytest/test_dynamic_bridge__rmw_fastrtps_cpp/.cache 8: inifile: None 8: rootdir: /home/paul/ros2_ws 8: -- run_test.py: return code 2 8: -- run_test.py: generate result file '/home/paul/ros2_ws/build/ros1_bridge/test_results/ros1_bridge/test_dynamic_bridge__rmw_fastrtps_cpp.xunit.xml' with failed test 8: -- run_test.py: verify result file '/home/paul/ros2_ws/build/ros1_bridge/test_results/ros1_bridge/test_dynamic_bridge__rmw_fastrtps_cpp.xunit.xml' 8/9 Test #8: test_dynamic_bridge__rmw_fastrtps_cpp .....***Failed 0.65 sec test 9 Start 9: test_dynamic_bridge__rmw_opensplice_cpp 9: Test command: /usr/bin/python3 "-u" "/home/paul/ros2_ws/install/share/ament_cmake_test/cmake/run_test.py" "/home/paul/ros2_ws/build/ros1_bridge/test_results/ros1_bridge/test_dynamic_bridge__rmw_opensplice_cpp.xunit.xml" "--package-name" "ros1_bridge" "--output-file" "/home/paul/ros2_ws/build/ros1_bridge/ament_cmake_pytest/test_dynamic_bridge__rmw_opensplice_cpp.txt" "--env" "RMW_IMPLEMENTAION=" "--command" "/usr/bin/python3" "-u" "-m" "pytest" "/home/paul/ros2_ws/build/ros1_bridge/test_dynamic_bridge__rmw_opensplice_cpp_.py" "-o" "cache_dir=/home/paul/ros2_ws/build/ros1_bridge/ament_cmake_pytest/test_dynamic_bridge__rmw_opensplice_cpp/.cache" "--junit-xml=/home/paul/ros2_ws/build/ros1_bridge/test_results/ros1_bridge/test_dynamic_bridge__rmw_opensplice_cpp.xunit.xml" "--junit-prefix=ros1_bridge" 9: Test timeout computed to be: 60 9: -- run_test.py: extra environment variables: 9: - RMW_IMPLEMENTAION= 9: -- run_test.py: invoking following command in '/home/paul/ros2_ws/src/ros2/ros1_bridge': 9: - /usr/bin/python3 -u -m pytest /home/paul/ros2_ws/build/ros1_bridge/test_dynamic_bridge__rmw_opensplice_cpp_.py -o cache_dir=/home/paul/ros2_ws/build/ros1_bridge/ament_cmake_pytest/test_dynamic_bridge__rmw_opensplice_cpp/.cache --junit-xml=/home/paul/ros2_ws/build/ros1_bridge/test_results/ros1_bridge/test_dynamic_bridge__rmw_opensplice_cpp.xunit.xml --junit-prefix=ros1_bridge 9: usage: pytest.py [options] [file_or_dir] [file_or_dir] [...] 9: pytest.py: error: unrecognized arguments: -o cache_dir=/home/paul/ros2_ws/build/ros1_bridge/ament_cmake_pytest/test_dynamic_bridge__rmw_opensplice_cpp/.cache 9: inifile: None 9: rootdir: /home/paul/ros2_ws 9: -- run_test.py: return code 2 9: -- run_test.py: generate result file '/home/paul/ros2_ws/build/ros1_bridge/test_results/ros1_bridge/test_dynamic_bridge__rmw_opensplice_cpp.xunit.xml' with failed test 9: -- run_test.py: verify result file '/home/paul/ros2_ws/build/ros1_bridge/test_results/ros1_bridge/test_dynamic_bridge__rmw_opensplice_cpp.xunit.xml' 9/9 Test #9: test_dynamic_bridge__rmw_opensplice_cpp ...***Failed 0.66 sec 78% tests passed, 2 tests failed out of 9 Label Time Summary: copyright = 0.66 sec (1 test) cppcheck = 0.62 sec (1 test) cpplint = 1.26 sec (1 test) flake8 = 0.92 sec (1 test) lint_cmake = 0.48 sec (1 test) linter = 5.26 sec (7 tests) pep257 = 0.61 sec (1 test) pytest = 1.31 sec (2 tests) uncrustify = 0.71 sec (1 test) Total Test time (real) = 6.58 sec The following tests FAILED: 8 - test_dynamic_bridge__rmw_fastrtps_cpp (Failed) 9 - test_dynamic_bridge__rmw_opensplice_cpp (Failed) Errors while running CTest Makefile:71: recipe for target 'test' failed make: *** [test] Error 8 <== Command '. /home/paul/ros2_ws/build/ros1_bridge/cmake__test.sh && /usr/bin/make test 'ARGS=-V -D ExperimentalTest --no-compress-output'' failed in '/home/paul/ros2_ws/build/ros1_bridge' with exit code '2' 'test_pkg' for package '/home/paul/ros2_ws/src/ros2/ros1_bridge' failed: <== Command '. /home/paul/ros2_ws/build/ros1_bridge/cmake__test.sh && /usr/bin/make test 'ARGS=-V -D ExperimentalTest --no-compress-output'' failed in '/home/paul/ros2_ws/build/ros1_bridge' with exit code '2' <== Command '. /home/paul/ros2_ws/build/ros1_bridge/cmake__test.sh && /usr/bin/make test 'ARGS=-V -D ExperimentalTest --no-compress-output'' failed in '/home/paul/ros2_ws/build/ros1_bridge' with exit code '2' @dirk-thomas: Does this help you to understand the nature of the problem? --- [Visit Topic](https://discourse.ros.org/t/ament-build-test-failed/3398/11) or reply to this email to respond. 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