24 feb 2017 on en.ws.beta: https://travis-ci.org/wikimedia/pywikibot-core/jobs/204884483#L2011
17 jun 2017 on zh.wp.beta: https://travis-ci.org/magul/pywikibot-core/jobs/244023949
The easiest fix here is to create a new page on the wiki in question.
We should adapt the test case to clarify how to resolve the issue in this case.