https://travis-ci.org/wikimedia/pywikibot/jobs/401140777#L4029:
WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key review is not known. WARNING: Log entry key create is not known. WARNING: Log entry key merge is not known. WARNING: Log entry key pagetriage-curation is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key review is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key review is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known. WARNING: Log entry key create is not known.
Also see ccdb71a47726221403cebdfa24753f6aba1f4dc4 where this warning was introduced. We should "update the bot for unknown types".