def tearDownModule():
        errors = (exceptions.Conflict, exceptions.TooManyRequests)
        retry = RetryErrors(errors, max_tries=9)
>       retry(Config.TEST_BUCKET.delete)(force=True)
...
E Conflict: 409 DELETE https://www.googleapis.com/storage/v1/b/new_1552405494808: The bucket you tried to delete was not empty.