python-pytest-cov fails to build with Python 3.9.0a2.

____________________________ test_contexts[nodist] _____________________________
/builddir/build/BUILD/pytest-cov-2.8.1/tests/test_pytest_cov.py:2011: in test_contexts
    assert line_data[label] == actual, "Wrong lines for context {!r}".format(context)
E   AssertionError: Wrong lines for context 'test_contexts.py::OldStyleTests::test_03|run'
E   assert [28, 31, 34, 35] == [34, 35, 28, 31]
E     At index 0 diff: 28 != 34
E     Full diff:
E     - [28, 31, 34, 35]
E     + [34, 35, 28, 31]

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.9/fedora-rawhide-x86_64/01140922-python-pytest-cov/

For all our attempts to build python-pytest-cov with Python 3.9, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.9/package/python-pytest-cov/

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 3.9:
https://copr.fedorainfracloud.org/coprs/g/python/python3.9/

Let us know here if you have any questions.

Python 3.9 will be included in Fedora 33, but the initial bootstrapping has already started.
A build failure this early in the bootstrap sequence blocks us very much.