Build error when using docutils

[David-Le-Nir]

I'm currently migrating to Sphinx 8.2.3 and sphinx-Needs 4.2.0.

With sphinx-test-reports in 1.1.0, when built with "sphinx-build" no issue but when built with "docutils" I got he following error:

/usr/local/lib/python3.11/dist-packages/sphinxcontrib/test_reports/environment.py:58: RemovedInSphinx90Warning: 'sphinx.builders.html.StandaloneHTMLBuilder.css_files' is deprecated. Check CHANGES for Sphinx API modifications.
  hasattr(app.builder, "css_files") and static_data_file in app.builder.css_files  # noqa: W503
/usr/local/lib/python3.11/dist-packages/sphinxcontrib/test_reports/environment.py:58: RemovedInSphinx90Warning: The str interface for _CascadingStyleSheet objects is deprecated. Use css.filename instead.
  hasattr(app.builder, "css_files") and static_data_file in app.builder.css_files  # noqa: W503
Copying static files for sphinx-test-results custom style support...[100%] --- Logging error ---
Traceback (most recent call last):
  File "/usr/lib/python3.11/logging/__init__.py", line 1110, in emit
    msg = self.format(record)
          ^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/logging/__init__.py", line 953, in format
    return fmt.format(record)
           ^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/dist-packages/sphinx/util/logging.py", line 574, in format
    return colourise(colour_name, message)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/dist-packages/sphinx/_cli/util/colour.py", line 58, in colourise
    if colour_name.startswith('_') or colour_name in {
       ^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'function' object has no attribute 'startswith'
Call stack:
  File "/usr/local/bin/sphinx-build", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.11/dist-packages/sphinx/cmd/build.py", line 493, in main
    return build_main(argv)
  File "/usr/local/lib/python3.11/dist-packages/sphinx/cmd/build.py", line 432, in build_main
    app.build(args.force_all, args.filenames)
  File "/usr/local/lib/python3.11/dist-packages/sphinx/application.py", line 422, in build
    self.builder.build_all()
  File "/usr/local/lib/python3.11/dist-packages/sphinx/builders/__init__.py", line 319, in build_all
    self.build(None, summary=__('all source files'), method='all')
  File "/usr/local/lib/python3.11/dist-packages/sphinx/builders/__init__.py", line 403, in build
    updated_docnames = set(self.read())
  File "/usr/local/lib/python3.11/dist-packages/sphinx/builders/__init__.py", line 564, in read
    for retval in self.events.emit('env-updated', self.env):
  File "/usr/local/lib/python3.11/dist-packages/sphinx/events.py", line 404, in emit
    results.append(listener.handler(self.app, *args))
  File "/usr/local/lib/python3.11/dist-packages/sphinxcontrib/test_reports/environment.py", line 78, in install_styles_static_files
    for source_file_path in status_iterator(
  File "/usr/local/lib/python3.11/dist-packages/sphinx/util/display.py", line 53, in status_iterator
    logger.info(stringify_func(item), nonl=True, color=color)
  File "/usr/lib/python3.11/logging/__init__.py", line 1849, in info
    self.log(INFO, msg, *args, **kwargs)
  File "/usr/local/lib/python3.11/dist-packages/sphinx/util/logging.py", line 138, in log
    super().log(level, msg, *args, **kwargs)
  File "/usr/lib/python3.11/logging/__init__.py", line 1887, in log
    self.logger.log(level, msg, *args, **kwargs)
  File "/usr/lib/python3.11/logging/__init__.py", line 1559, in log
    self._log(level, msg, args, **kwargs)
  File "/usr/lib/python3.11/logging/__init__.py", line 1634, in _log
    self.handle(record)
  File "/usr/lib/python3.11/logging/__init__.py", line 1644, in handle
    self.callHandlers(record)
  File "/usr/lib/python3.11/logging/__init__.py", line 1706, in callHandlers
    hdlr.handle(record)
  File "/usr/lib/python3.11/logging/__init__.py", line 978, in handle
    self.emit(record)
  File "/usr/local/lib/python3.11/dist-packages/sphinx/util/logging.py", line 219, in emit
    super().emit(record)
Message: 'common.css'
Arguments: ()
/usr/local/lib/python3.11/dist-packages/sphinxcontrib/test_reports/environment.py:35: RemovedInSphinx90Warning: 'sphinx.builders.html.StandaloneHTMLBuilder.css_files' is deprecated. Check CHANGES for Sphinx API modifications.
  if hasattr(app.builder, "css_files") and static_data_file not in app.builder.css_files:  # noqa: W503
/usr/local/lib/python3.11/dist-packages/sphinxcontrib/test_reports/environment.py:35: RemovedInSphinx90Warning: The str interface for _CascadingStyleSheet objects is deprecated. Use css.filename instead.
  if hasattr(app.builder, "css_files") and static_data_file not in app.builder.css_files:  # noqa: W503```

I do not know what is the difference in behavior.

Do you have an idea of how I could workaround that ?

Or maybe I can work on a PR but I need some advice of what to do ...

Thanks