The 1.36.0-wmf.28 version of MediaWiki is blocked[0]. The new version is
deployed to testwikis, but can proceed no further until these issues are
resolved:
** MediumSpecificBagOStuff.php Undefined offset errors:
https://phabricator.wikimedia.org/T273006
<https://phabricator.wikimedia.org/T273006>*
* CacheTime.php Undefined index Version
https://phabricator.wikimedia.org/T273007
(should be resolved during the next roll forward attempt)
* Failed assertion in TableFixups handler
https://phabricator.wikimedia.org/T265720
(may be downgraded from unbreak-now).
Once these issues are resolved train can resume. If these issues are
resolved on a Friday the train will resume Monday. Thank you for your help
resolving these issues! -- Your humble train toiler
[0]. <https://phabricator.wikimedia.org/T271342>