Doctesting all installed modules of the Sage library.
Traceback (most recent call last):
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\Scripts\sage-runtests", line 9, in <module>
    sys.exit(main())
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\lib\site-packages\sage\doctest\__main__.py", line 193, in main
    err = DC.run()
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\lib\site-packages\sage\doctest\control.py", line 1620, in run
    self.expand_files_into_sources()
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\lib\site-packages\sage\doctest\control.py", line 1058, in expand_files_into_sources
    self.sources = [FileDocTestSource(path, self.options) for path in expand()]
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\lib\site-packages\sage\doctest\control.py", line 1058, in <listcomp>
    self.sources = [FileDocTestSource(path, self.options) for path in expand()]
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\lib\site-packages\sage\doctest\control.py", line 1051, in expand
    if not skipfile(os.path.join(root, file),
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\lib\site-packages\sage\doctest\control.py", line 333, in skipfile
    file_optional_tags = parse_file_optional_tags(enumerate(F))
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\lib\site-packages\sage\doctest\parsing.py", line 273, in parse_file_optional_tags
    for line_count, line in lines:
  File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\encodings\cp1252.py", line 23, in decode
    return codecs.charmap_decode(input,self.errors,decoding_table)[0]
UnicodeDecodeError: 'charmap' codec can't decode byte 0x90 in position 8039: character maps to <undefined>
py310-norequirements: 25988 C exit 1 (1.50 seconds) D:\a\sage\sage\pkgs\sagemath-categories> bash -c "cd $(python -c \"import sys; \\\"\\\" in sys.path and sys.path.remove(\\\"\\\"); from sage.env import SAGE_LIB; print(SAGE_LIB)\") && sage-runtests -p --force-lib --initial --environment=sage.all__sagemath_categories --probe all --baseline-stats-path=$KNOWN_TEST_FAILURES --optional=sage --installed" pid=4444 [tox\execute\api.py:280]

Using --baseline-stats-path=D:\a\sage\sage\pkgs\sagemath-categories/known-test-failures.json
Doctesting 1059 files.
----------------------------------------------------------------------
Doctests interrupted: 0/1059 files tested
----------------------------------------------------------------------
Total time for all tests: 0.0 seconds
    cpu time: 0.0 seconds
    cumulative wall time: 0.0 seconds
Traceback (most recent call last):
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\lib\site-packages\sage\doctest\control.py", line 1212, in run_doctests
    self.dispatcher.dispatch()
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\lib\site-packages\sage\doctest\forker.py", line 2174, in dispatch
    self.parallel_dispatch()
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\lib\site-packages\sage\doctest\forker.py", line 1933, in parallel_dispatch
    signal.signal(signal.SIGCHLD, dummy_handler)
AttributeError: module 'signal' has no attribute 'SIGCHLD'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\Scripts\sage-runtests", line 9, in <module>
    sys.exit(main())
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\lib\site-packages\sage\doctest\__main__.py", line 193, in main
    err = DC.run()
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\lib\site-packages\sage\doctest\control.py", line 1[623](https://github.com/mkoeppe/sage/actions/runs/15940087187/job/44968123539#step:9:624), in run
    self.run_doctests()
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\lib\site-packages\sage\doctest\control.py", line 1218, in run_doctests
    self.cleanup(False)
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\lib\site-packages\sage\doctest\control.py", line 1265, in cleanup
    self.save_stats(self.options.stats_path)
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\lib\site-packages\sage\doctest\control.py", line 810, in save_stats
    with atomic_write(filename) as stats_file:
  File "D:\a\sage\sage\pkgs\sagemath-categories\.tox\py310-norequirements\lib\site-packages\sage\misc\temporary_file.py", line 347, in __enter__
    fd, name = tempfile.mkstemp(dir=self.tmpdir)
  File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\tempfile.py", line 341, in mkstemp
    return _mkstemp_inner(dir, prefix, suffix, flags, output_type)
  File "C:\hostedtoolcache\windows\Python\3.10.11\x64\lib\tempfile.py", line 256, in _mkstemp_inner
    fd = _os.open(file, flags, 0o600)
FileNotFoundError: [Errno 2] No such file or directory: 'D:\\a\\sage\\sage\\pkgs\\sagemath-categories\\.tox\\py310-norequirements\\.sage\\tmp3tg64go2'