python-nose2 fails to build with Python 3.13.03.

======================================================================
FAIL: test_unittest_assertion (nose2.tests.functional.test_prettyassert.TestPrettyAsserts.test_unittest_assertion)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/builddir/build/BUILD/nose2-0.14.0/nose2/tests/functional/test_prettyassert.py", line 171, in test_unittest_assertion
    stderr = self.assertProcOutputPattern(proc, expected)
             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^
  File "/builddir/build/BUILD/nose2-0.14.0/nose2/tests/functional/test_prettyassert.py", line 15, in assertProcOutputPattern
    self.assertTestRunOutputMatches(proc, stderr=expected)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
  File "/builddir/build/BUILD/nose2-0.14.0/nose2/tests/_common.py", line 82, in assertTestRunOutputMatches
    self.assertRegex(util.safe_decode(cmd_stderr), stderr)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: Regex didn't match: 'self.assertTrue\\(x\\)\nAssertionError: False is not true' not found in 'test_old_assertion (unittest_assertion.test_prettyassert_unittestassertion.TestFoo.test_old_assertion) ... FAIL\n\n======================================================================\nFAIL: test_old_assertion (unittest_assertion.test_prettyassert_unittestassertion.TestFoo.test_old_assertion)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File "/builddir/build/BUILD/nose2-0.14.0/nose2/tests/functional/support/scenario/pretty_asserts/unittest_assertion/test_prettyassert_unittestassertion.py", line 7, in test_old_assertion\n    self.assertTrue(x)\n    ~~~~~~~~~~~~~~~^^^\nAssertionError: False is not true\n\n----------------------------------------------------------------------\nRan 1 test in 0.000s\n\nFAILED (failures=1)\n'
https://docs.python.org/3.13/whatsnew/3.13.html

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.13/fedora-rawhide-x86_64/06924371-python-nose2/

For all our attempts to build python-nose2 with Python 3.13, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.13/package/python-nose2/

Testing and mass rebuild of packages is happening in copr.
You can follow these instructions to test locally in mock if your package builds with Python 3.13:
https://copr.fedorainfracloud.org/coprs/g/python/python3.13/

Let us know here if you have any questions.

Python 3.13 is planned to be included in Fedora 41.
To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.13.
A build failure prevents us from testing all dependent packages (transitive [Build]Requires),
so if this package is required a lot, it's important for us to get it fixed soon.

We'd appreciate help from the people who know this package best,
but if you don't want to work on this now, let us know so we can try to work around it on our side.