python-ipyparallel fails to build with Python 3.13.0b1.

+ /usr/bin/pytest -v --color=no -W 'ignore:datetime.datetime.utcnow() is deprecated:DeprecationWarning'
ImportError while loading conftest '/builddir/build/BUILD/ipyparallel-8.8.0/ipyparallel/tests/conftest.py'.
ipyparallel/__init__.py:15: in <module>
    from .client.asyncresult import *  # noqa
ipyparallel/client/asyncresult.py:23: in <module>
    from ipyparallel.util import _parse_date, compare_datetimes, progress, utcnow
ipyparallel/util.py:27: in <module>
    from jupyter_client import session
/usr/lib/python3.13/site-packages/jupyter_client/__init__.py:3: in <module>
    from .asynchronous import AsyncKernelClient
/usr/lib/python3.13/site-packages/jupyter_client/asynchronous/__init__.py:1: in <module>
    from .client import AsyncKernelClient  # noqa
/usr/lib/python3.13/site-packages/jupyter_client/asynchronous/client.py:11: in <module>
    from ..channels import AsyncZMQSocketChannel, HBChannel
/usr/lib/python3.13/site-packages/jupyter_client/channels.py:16: in <module>
    from .session import Session
/usr/lib/python3.13/site-packages/jupyter_client/session.py:53: in <module>
    from .jsonutil import extract_dates, json_clean, json_default, squash_dates
/usr/lib/python3.13/site-packages/jupyter_client/jsonutil.py:31: in <module>
    datetime.strptime("1", "%d")  # noqa
/usr/lib64/python3.13/_strptime.py:573: in _strptime_datetime
    tt, fraction, gmtoff_fraction = _strptime(data_string, format)
/usr/lib64/python3.13/_strptime.py:336: in _strptime
    format_regex = _TimeRE_cache.compile(format)
/usr/lib64/python3.13/_strptime.py:282: in compile
    return re_compile(self.pattern(format), IGNORECASE)
/usr/lib64/python3.13/_strptime.py:270: in pattern
    warnings.warn("""\
E   DeprecationWarning: Parsing dates involving a day of month without a year specified is ambiguious
E   and fails to parse leap day. The default behavior will change in Python 3.15
E   to either always raise an exception or to use a different default year (TBD).
E   To avoid trouble, add a specific year to the input & format.
E   See https://github.com/python/cpython/issues/70647.

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_64/07449588-python-ipyparallel/

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

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.