FAIL ArcanistPEP8LinterTestCase::testVersion Assertion failed, expected 'true' (at ArcanistExternalLinterTestCase.php:10): Failed to parse version from command.
https://pypi.python.org/pypi/pep8
So 1.3 (not 1.3.0) is followed by 1.3.1, but not consistently since there is 1.6.0 followed by 1.6.1. Fun.