Fix CI

[Zethson]

testing

[flying-sheep]

OK, I see:

self = <joblib.parallel.BatchCompletionCallBack object at 0x7f7050dccc50>

    def _return_or_raise(self):
        try:
            if self.status == TASK_ERROR:
>               raise self._result
E               joblib.externals.loky.process_executor.TerminatedWorkerError: A worker process managed by the executor was unexpectedly terminated. This could be caused by a segmentation fault while calling the function or by an excessive memory usage causing the Operating System to kill the worker.
E               
E               The exit codes of the workers are {EXIT(1), EXIT(1)}

/opt/hostedtoolcache/Python/3.12.9/x64/lib/python3.12/site-packages/joblib/parallel.py:763: TerminatedWorkerError
----------------------------- Captured stdout call -----------------------------
! Set smaller span value in the case of a `segmentation fault` error.
! Set larger span in case of svddc or other near singularities error.
Processing data...                                            0% -:--:--
----------------------------- Captured stderr call -----------------------------
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'joblib'
/opt/hostedtoolcache/Python/3.12.9/x64/bin/python: Error while finding module specification for 'joblib.externals.loky.backend.popen_loky_posix' (ModuleNotFoundError: No module named 'joblib')
/opt/hostedtoolcache/Python/3.12.9/x64/bin/python: Error while finding module specification for 'joblib.externals.loky.backend.popen_loky_posix' (ModuleNotFoundError: No module named 'joblib')
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'joblib'
/opt/hostedtoolcache/Python/3.12.9/x64/bin/python: Error while finding module specification for 'joblib.externals.loky.backend.popen_loky_posix' (ModuleNotFoundError: No module named 'joblib')

Of special note is the stderr content:

…/bin/python: Error while finding module specification for joblib.externals.loky.backend.popen_loky_posix (ModuleNotFoundError: No module named joblib)

Since that’s in stderr (and not actually a thrown exception that pytest receives), I assume these come from the workers, which would mean that the workers are executed in an environment that doesn’t have joblib installed or PYTHONPATH set in a way that it doesn‘t contain joblib.

I found this when searching the web for the error message:

• joblib not found when Parallel is executed inside a pex joblib/joblib#849, which is about portable executables, which you don’t do, but there might still be pointers
• https://stackoverflow.com/a/76343799/247482, which is about nested calls (joblib-inside-joblib)

[flying-sheep]

OK, I filed actions/runner-images#11639

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.71%. Comparing base (cf49b53) to head (122250c).
Report is 10 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #704      +/-   ##
==========================================
+ Coverage   64.97%   65.71%   +0.73%     
==========================================
  Files          46       47       +1     
  Lines        6007     6110     +103     
==========================================
+ Hits         3903     4015     +112     
+ Misses       2104     2095       -9