python-openstacksdk fails to build with Python 3.10.0a5.

+ stestr-3 --test-path ./openstack/tests/unit run --black-regex '(test_wait_for_task_.*|.*TestOsServiceTypesVersion.*|.*test_timeout_and_failures_not_fail.*)'
=========================
Failures during discovery
=========================
--- import errors ---
Failed to import test module: openstack.tests.unit
Traceback (most recent call last):
  File "/usr/lib64/python3.10/unittest/loader.py", line 470, in _find_test_path
    package = self._get_module_from_name(name)
  File "/usr/lib64/python3.10/unittest/loader.py", line 377, in _get_module_from_name
    __import__(name)
  File "/builddir/build/BUILD/openstacksdk-0.50.0/openstack/__init__.py", line 17, in <module>
    import openstack.config
  File "/builddir/build/BUILD/openstacksdk-0.50.0/openstack/config/__init__.py", line 17, in <module>
    from openstack.config.loader import OpenStackConfig  # noqa
  File "/builddir/build/BUILD/openstacksdk-0.50.0/openstack/config/loader.py", line 34, in <module>
    from openstack.config import cloud_region
  File "/builddir/build/BUILD/openstacksdk-0.50.0/openstack/config/cloud_region.py", line 44, in <module>
    from openstack import proxy
  File "/builddir/build/BUILD/openstacksdk-0.50.0/openstack/proxy.py", line 25, in <module>
    from openstack import resource
  File "/builddir/build/BUILD/openstacksdk-0.50.0/openstack/resource.py", line 210, in <module>
    class _ComponentManager(collections.MutableMapping):
AttributeError: module 'collections' has no attribute 'MutableMapping'
================================================================================
The above traceback was encountered during test discovery which imports all the found test modules in the specified test_path.


The deprecated aliases to Collections Abstract Base Classes were removed from the collections module.
https://docs.python.org/3.10/whatsnew/changelog.html#python-3-10-0-alpha-5
https://bugs.python.org/issue37324

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.10/fedora-rawhide-x86_64/01952360-python-openstacksdk/

For all our attempts to build python-openstacksdk with Python 3.10, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.10/package/python-openstacksdk/

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 3.10:
https://copr.fedorainfracloud.org/coprs/g/python/python3.10/

Let us know here if you have any questions.

Python 3.10 will be included in Fedora 35. To make that update smoother, we're building Fedora packages with early pre-releases of Python 3.10.
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.