Now that this test is python 3, test output has lots of warnings like this:

    software/caddy-frontend/test/test.py:305: ResourceWarning: unclosed file <_io.TextIOWrapper name='software/caddy-frontend/test/test_data/test.TestEnableHttp2ByDefaultFalseSlave.test00cluster_request_instance_parameter_dict.txt' mode='r' encoding='UTF-8'>
      test_data = open(test_data_file).read().strip()
    ResourceWarning: Enable tracemalloc to get the object allocation traceback