.ruby-gemset and .ruby-version should be removed and RVM setup should be moved to Gemfile[1].
Repositories that are doing it right:
https://github.com/wikimedia/mediawiki-extensions-UniversalLanguageSelector
https://github.com/wikimedia/mediawiki-extensions-VisualEditor
Repositories that should be updated:
https://github.com/wikimedia/mediawiki-extensions-CirrusSearch
https://github.com/wikimedia/mediawiki-extensions-MobileFrontend
https://github.com/wikimedia/mediawiki-extensions-Wikibase
https://github.com/wikimedia/qa-browsertests
Version: unspecified
Severity: normal