Complete log is attached this is just an error message:
[ 674s] ======================================================================
[ 674s] ERROR: breezy.tests.test_selftest.TestTransportScenarios.test_scenarios_include_transport_class
[ 674s] ----------------------------------------------------------------------
[ 674s] testtools.testresult.real._StringException: Empty attachments:
[ 674s] log
[ 674s]
[ 674s] Traceback (most recent call last):
[ 674s] File "/home/abuild/rpmbuild/BUILDROOT/breezy-3.3.2-0.x86_64/usr/lib64/python3.10/site-packages/breezy/tests/test_selftest.py", line 173, in test_scenarios_include_transport_class
[ 674s] scenarios = transport_test_permutations()
[ 674s] File "/home/abuild/rpmbuild/BUILDROOT/breezy-3.3.2-0.x86_64/usr/lib64/python3.10/site-packages/breezy/tests/per_transport.py", line 75, in transport_test_permutations
[ 674s] pyutils.get_named_object(module))
[ 674s] File "/home/abuild/rpmbuild/BUILDROOT/breezy-3.3.2-0.x86_64/usr/lib64/python3.10/site-packages/breezy/pyutils.py", line 56, in get_named_object
[ 674s] __import__(module_name, globals(), locals(), [])
[ 674s] ModuleNotFoundError: No module named 'breezy.testingplugins'
[ 674s]
[ 674s] ======================================================================
[ 674s] FAIL: breezy.tests.test_selftest.TestTestSuite.test_test_suite
[ 674s] ----------------------------------------------------------------------
[ 674s] testtools.testresult.real._StringException: Empty attachments:
[ 674s] log
[ 674s]
[ 674s] Traceback (most recent call last):
[ 674s] File "/home/abuild/rpmbuild/BUILDROOT/breezy-3.3.2-0.x86_64/usr/lib64/python3.10/site-packages/breezy/tests/test_selftest.py", line 3135, in test_test_suite
[ 674s] self.assertSubset(expected_test_list, _test_ids(suite))
[ 674s] File "/home/abuild/rpmbuild/BUILDROOT/breezy-3.3.2-0.x86_64/usr/lib64/python3.10/site-packages/breezy/tests/__init__.py", line 1442, in assertSubset
[ 674s] raise AssertionError("value(s) %r not present in container %r" %
(the error message is too long and Launchpad rejected it)
Hmm, I think Ubuntu saw something similar. Nothing has changed in this space recently. Can you reproduce this with older versions of Python, and which version are you using?