https://bugzilla.wikimedia.org/show_bug.cgi?id=72699
--- Comment #1 from John Mark Vandenberg jayvdb@gmail.com --- I know that this error has happened many times in the past.
It would be great to find which travis logs include this error, to triage it better.
This shows many other similar logs https://www.google.com/search?q=%22_run_exitfuncs%22+%22process%20shutting%2...
But adding search term "pywikibot" and there are zero results.