python-zope-testrunner fails to build with Python 3.14.0a3.

+ /usr/bin/python3 -m tox --current-env -q --recreate -e py314
Running tests at level 1
Running zope.testrunner.layer.UnitTests tests:
  Set up zope.testrunner.layer.UnitTests in 0.000 seconds.
  Running:
.............

Failure in test /builddir/build/BUILD/python-zope-testrunner-6.6-build/BUILDROOT/usr/lib/python3.14/site-packages/zope/testrunner/tests/testrunner-edge-cases.rst
Failed doctest test for testrunner-edge-cases.rst
  File "/builddir/build/BUILD/python-zope-testrunner-6.6-build/BUILDROOT/usr/lib/python3.14/site-packages/zope/testrunner/tests/testrunner-edge-cases.rst", line 0

----------------------------------------------------------------------
File "/builddir/build/BUILD/python-zope-testrunner-6.6-build/BUILDROOT/usr/lib/python3.14/site-packages/zope/testrunner/tests/testrunner-edge-cases.rst", line 91, in testrunner-edge-cases.rst
Failed example:
    try: testrunner.run_internal(defaults)
    finally: sys.stdin = real_stdin
    # doctest: +ELLIPSIS
Differences (ndiff with -expected +actual):
    - Running zope.testrunner.layer.UnitTests tests:...
    ?                                               ---
    + Running zope.testrunner.layer.UnitTests tests:
    +   Set up zope.testrunner.layer.UnitTests in N.NNN seconds.
    - > testrunner-ex/sample3/sampletests_d.py(NNN)f()
    - -> ...
      (Pdb) p x
    - 1
      (Pdb) c
        Ran 1 tests with 0 failures, 0 errors and 0 skipped in N.NNN seconds.
    - ...
    + Tearing down left over layers:
    +   Tear down zope.testrunner.layer.UnitTests in N.NNN seconds.
      False


https://docs.python.org/3.14/whatsnew/3.14.html

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.14/fedora-rawhide-x86_64/08474928-python-zope-testrunner/

For all our attempts to build python-zope-testrunner with Python 3.14, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.14/package/python-zope-testrunner/

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 3.14:
https://copr.fedorainfracloud.org/coprs/g/python/python3.14/

Let us know here if you have any questions.

Python 3.14 is planned to be included in Fedora 43.
To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.14.
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.