The test case test_beautify_last_updated_timestamp in test_utils.py has timezone-dependent oracles
The test code
self.__check_beautify_last_updated_timestamp(60 * 60 * 24 * 2, "Thursday")
self.__check_beautify_last_updated_timestamp(60 * 60 * 24 * 7 - 1, "Thursday")
in test_beautify_last_updated_timestamp
in test_utils.py
assumes that time.localtime(0)
is a Thursday, but this is only true in timezones with a positive offset; in some timezones it was still Wednesday when the Unix epoch hit. Therefore the test fails in these timezones.