This pull request has been mentioned on ROS Discourse. There might be relevant details there:

https://discourse.ros.org/t/ros-pmc-meeting-minutes-2025-01-18/42127/1

Pulls: #269
Gist: https://gist.githubusercontent.com/mjcarroll/eeeb104c3c2d1af1f53df736dcd949cb/raw/c0fd1b9edd8c6beda85acb562794b49860c3b4d0/ros2.repos
BUILD args:
TEST args:
ROS Distro: rolling
Job: ci_launcher
ci_launcher ran: https://ci.ros2.org/job/ci_launcher/15260

• Linux
• Linux-aarch64
• Linux-rhel
• Windows

2 Windows test failures in ament_mypy are in a completely unrelated package that's not a dependency. It looks like a toolchain version missmatch?

C:\Python38\lib\site-packages\_pytest\runner.py:311: in from_call
    result: Optional[TResult] = func()
C:\Python38\lib\site-packages\_pytest\runner.py:255: in <lambda>
    lambda: ihook(item=item, **kwds), when=when, reraise=reraise
C:\Python38\lib\site-packages\pluggy\_hooks.py:513: in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
C:\Python38\lib\site-packages\pluggy\_manager.py:120: in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
C:\Python38\lib\site-packages\_pytest\runner.py:150: in pytest_runtest_setup
    item.session._setupstate.prepare(item)
C:\Python38\lib\site-packages\_pytest\runner.py:447: in prepare
    self.stack.append(col)
E   AttributeError: 'dict' object has no attribute 'append'

https://ci.ros2.org/job/ci_windows/23413/testReport/ament_mypy.test/test_mypy/test_mypy/

And rosbag2 has a header compile warning: player_progress_bar.hpp:91 [C4251](https://ci.ros2.org/job/ci_windows/23413/msbuild/folder.-1996843695/category.63474781/)

And Build Tools? has a casting issue memory:3381 [C4267](https://ci.ros2.org/job/ci_windows/23413/msbuild/folder.267693166/category.63474818/) [Normal](https://ci.ros2.org/job/ci_windows/23413/msbuild/folder.267693166/NORMAL) 1 'argument': conversion from 'size_t' to 'int32_t', possible loss of data

I reran and saw that the errors were consistent: * Windows

I reran this removing the local changes and confirmed that the errors still exist:

• Windows baseline without changes

Cross reference issues:

• ament_mypy: 🧑‍🌾 test_mypy and test_xmllint failure: failed on setup with "AttributeError... in windows release ament/ament_lint#518
• Warnings: 🧑‍🌾 rosbag2_transport windows warnings rosbag2#1926

Migration ticket for Nav2 made: ros-navigation/navigation2#4976