The 1.35.0-wmf.19 version of MediaWiki has been promoted for all wikis.[0]
Thanks to all that helped with remediation and re-deployment, but
particularly hearty thanks to James Forrester for his help sifting through
logs to identify the root cause and to Erik Bernhardson for implementing
fix.[1]
The 1.35.0-wmf.19 version of MediaWiki is blocked[0].
The new version is deployed to group1[1], but can proceed no further until
these issues are resolved:
* Varnish 5xx 2k/min spike - https://phabricator.wikimedia.org/T245202
Once these issues are resolved train can resume. If these issues are
