This can be recreated on ubuntu hirsute:
lxc launch ubuntu-daily:hirsute h1
lxc exec h1 /bin/bash
# clone murano and run py39 tests
tox -e py39
...
==============================
Failed 1 tests - output below:
==============================
murano.tests.unit.api.cmd.test_test_runner.TestCaseShell.test_help
------------------------------------------------------------------
Captured traceback:
~~~~~~~~~~~~~~~~~~~
Traceback (most recent call last):
File "/home/corey/pkg/wallaby/upstream/murano/murano/tests/unit/api/cmd/test_test_runner.py", line 88, in test_help
self.assertIn(usage, stdout)
File "/home/corey/pkg/wallaby/upstream/murano/.tox/py39/lib/python3.9/site-packages/testtools/testcase.py", line 421, in assertIn
self.assertThat(haystack, Contains(needle), message)
File "/home/corey/pkg/wallaby/upstream/murano/.tox/py39/lib/python3.9/site-packages/testtools/testcase.py", line 502, in assertThat
raise mismatch_error
testtools.matchers._impl.MismatchError: 'usage: murano-test-runner [-h] [--config-file CONFIG_FILE]\n [--os-auth-url OS_AUTH_URL]\n [--os-username OS_USERNAME]\n [--os-password OS_PASSWORD]\n [--os-project-name OS_PROJECT_NAME]\n [-l [</path1, /path2> [</path1, /path2> ...]]] [-v]\n [--version]\n <PACKAGE_FQN>\n [<testMethod1, className.testMethod2> [<testMethod1, className.testMethod2' not in "usage: murano-test-runner [-h] [--config-file CONFIG_FILE] [--os-auth-url OS_AUTH_URL] [--os-username OS_USERNAME]\n [--os-password OS_PASSWORD] [--os-project-name OS_PROJECT_NAME] [-l [</path1, /path2> ...]] [-v] [--version]\n <PACKAGE_FQN> [<testMethod1, className.testMethod2> ...]\n\npositional arguments:\n <PACKAGE_FQN> Full name of application package that is going to be tested\n <testMethod1, className.testMethod2>\n List of method names to be tested\n\noptional arguments:\n -h, --help show this help message and exit\n --config-file CONFIG_FILE\n Path to the murano config\n --os-auth-url OS_AUTH_URL\n Defaults to env[OS_AUTH_URL]\n --os-username OS_USERNAME\n Defaults to env[OS_USERNAME]\n --os-password OS_PASSWORD\n Defaults to env[OS_PASSWORD]\n --os-project-name OS_PROJECT_NAME\n Defaults to env[OS_PROJECT_NAME]\n -l [</path1, /path2> ...], --load_packages_from [</path1, /path2> ...]\n Directory to search packages from. We be added to the list of current directory list, provided in a config\n file.\n -v, --verbose increase output verbosity\n --version show program's version number and exit\n"
======
Totals
======
Ran: 1027 tests in 125.4236 sec.
- Passed: 1016
- Skipped: 10
- Expected Fail: 0
- Unexpected Success: 0
- Failed: 1
Sum of execute time for each test: 478.2167 sec.
