CI run failing on windows due to an unmount error?

[phoeenniixx]

Hi Team,
We are facing some issues in our CI on Windows runners after the 0.4.1 update. Found out that if we move to the prev ver of this package (0.4.0), it works perfectly again.
Error

INTERNALERROR> Traceback (most recent call last):
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\_pytest\main.py", line 330, in wrap_session
INTERNALERROR>     session.exitstatus = doit(config, session) or 0
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\_pytest\main.py", line 384, in _main
INTERNALERROR>     config.hook.pytest_runtestloop(session=session)
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\pluggy\_hooks.py", line 512, in __call__
INTERNALERROR>     return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\pluggy\_manager.py", line 120, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\pluggy\_callers.py", line 167, in _multicall
INTERNALERROR>     raise exception
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\pluggy\_callers.py", line 139, in _multicall
INTERNALERROR>     teardown.throw(exception)
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\_pytest\logging.py", line 816, in pytest_runtestloop
INTERNALERROR>     return (yield)  # Run all the tests.
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\pluggy\_callers.py", line 139, in _multicall
INTERNALERROR>     teardown.throw(exception)
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\_pytest\terminal.py", line 708, in pytest_runtestloop
INTERNALERROR>     result = yield
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\pluggy\_callers.py", line 139, in _multicall
INTERNALERROR>     teardown.throw(exception)
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\pytest_cov\plugin.py", line 348, in pytest_runtestloop
INTERNALERROR>     result = yield
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\pluggy\_callers.py", line 121, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\_pytest\main.py", line 408, in pytest_runtestloop
INTERNALERROR>     item.config.hook.pytest_runtest_protocol(item=item, nextitem=nextitem)
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\pluggy\_hooks.py", line 512, in __call__
INTERNALERROR>     return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\pluggy\_manager.py", line 120, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\pluggy\_callers.py", line 167, in _multicall
INTERNALERROR>     raise exception
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\pluggy\_callers.py", line 152, in _multicall
INTERNALERROR>     teardown.send(result)
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\_pytest\warnings.py", line 87, in pytest_runtest_protocol
INTERNALERROR>     with catch_warnings_for_item(
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\contextlib.py", line 142, in __exit__
INTERNALERROR>     next(self.gen)
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\_pytest\warnings.py", line 64, in catch_warnings_for_item
INTERNALERROR>     ihook.pytest_warning_recorded.call_historic(
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\pluggy\_hooks.py", line 534, in call_historic
INTERNALERROR>     res = self._hookexec(self.name, self._hookimpls.copy(), kwargs, False)
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\pluggy\_manager.py", line 120, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\pluggy\_callers.py", line 167, in _multicall
INTERNALERROR>     raise exception
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\pluggy\_callers.py", line 121, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\site-packages\pytest_github_actions_annotate_failures\plugin.py", line 112, in pytest_warning_recorded
INTERNALERROR>     compute_path(os.path.relpath(warning_message.filename)),
INTERNALERROR>   File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\ntpath.py", line 747, in relpath
INTERNALERROR>     raise ValueError("path is on mount %r, start on mount %r" % (
INTERNALERROR> ValueError: path is on mount 'C:', start on mount 'D:'

======================= 136 passed, 1 warning in 23.45s =======================

Link for the runs: https://github.com/sktime/pytorch-forecasting/actions/runs/27813591683/job/82309367199

Can anyone please help us in this?
For now, we have added an upper bound, but I think this is a bug?

[edgarrmondragon]

Thanks for the report @phoeenniixx!

I suspect badb1c5 (#138). I'll take a look.

[phoeenniixx]

Thanks a lot @edgarrmondragon !!

[LOCEANlloydizard]

Hi all, we're having the same issue but the failure only occurs on the Windows Python 3.13 CI job (windows-latest / windows-2025-vs2026). The same workflow passes on Windows Python 3.11 and 3.12. The traceback ends with the same:

File "...pytest_github_actions_annotate_failures/plugin.py", line 112, in pytest_warning_recorded
    compute_path(os.path.relpath(warning_message.filename))
ValueError: path is on mount 'C:', start on mount 'D:'

Thanks for the fix @edgarrmondragon !

[edgarrmondragon]

https://pypi.org/project/pytest-github-actions-annotate-failures/0.4.2/

Please give it a try.

[LOCEANlloydizard]

Yes, it passes CI now for us. All good, thanks for the quick fix! 🚀