python-avocado fails to build with Python 3.14.0a1.

+ /usr/bin/python3 selftests/check.py --job-api --nrunner-interface --unit --jobs --functional --optional-plugins --disable-plugin-checks robot
Error running method "pre_tests" of plugin "fetchasset": module 'ast' has no attribute 'Str'
JOB ID     : 1a174c974d5ce1910f53e0b4cd0e0c96a4305665
JOB LOG    : /builddir/avocado/job-results/job-2024-10-30T11.09-1a174c9/job.log
Traceback (most recent call last):

  File "/builddir/build/BUILD/python-avocado-92.3-build/BUILDROOT/usr/lib/python3.14/site-packages/avocado/core/job.py", line 638, in run_tests
    summary |= suite.run(self)
               ~~~~~~~~~^^^^^^

  File "/builddir/build/BUILD/python-avocado-92.3-build/BUILDROOT/usr/lib/python3.14/site-packages/avocado/core/suite.py", line 338, in run
    return self.runner.run_suite(job, self)
           ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^

  File "/builddir/build/BUILD/python-avocado-92.3-build/BUILDROOT/usr/lib/python3.14/site-packages/avocado/plugins/runner.py", line 381, in run_suite
    if not self.run_test(job, test_factory, queue, summary,
           ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                         deadline):
                         ^^^^^^^^^

  File "/builddir/build/BUILD/python-avocado-92.3-build/BUILDROOT/usr/lib/python3.14/site-packages/avocado/plugins/runner.py", line 170, in run_test
    proc.start()
    ~~~~~~~~~~^^

  File "/usr/lib64/python3.14/multiprocessing/process.py", line 121, in start
    self._popen = self._Popen(self)
                  ~~~~~~~~~~~^^^^^^

  File "/usr/lib64/python3.14/multiprocessing/context.py", line 224, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^

  File "/usr/lib64/python3.14/multiprocessing/context.py", line 300, in _Popen
    return Popen(process_obj)

  File "/usr/lib64/python3.14/multiprocessing/popen_forkserver.py", line 35, in __init__
    super().__init__(process_obj)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^

  File "/usr/lib64/python3.14/multiprocessing/popen_fork.py", line 20, in __init__
    self._launch(process_obj)
    ~~~~~~~~~~~~^^^^^^^^^^^^^

  File "/usr/lib64/python3.14/multiprocessing/popen_forkserver.py", line 47, in _launch
    reduction.dump(process_obj, buf)
    ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^

  File "/usr/lib64/python3.14/multiprocessing/reduction.py", line 60, in dump
    ForkingPickler(file, protocol).dump(obj)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^

TypeError: cannot pickle '_thread.RLock' object

when serializing dict item 'lock'

when serializing logging.FileHandler state

when serializing logging.FileHandler object

when serializing dict item '_Job__logging_handlers'

when serializing avocado.core.job.Job state

when serializing avocado.core.job.Job object

when serializing tuple item 0

when serializing dict item '_args'

when serializing multiprocessing.context.Process state

when serializing multiprocessing.context.Process object

Avocado crashed: TypeError: cannot pickle '_thread.RLock' object

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_64/08189182-python-avocado/

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

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.