Thanks to everyone helping fix the first set of tasks.
There are a few more which are now more visible.
https://phabricator.wikimedia.org/T129763 "beta wikipedia test builds fail"
https://phabricator.wikimedia.org/T129281 "Test test_content_format failing due to new member 'application/vnd.php.serialized' on Wikibase repos" (guess: a Wikibase php change has unintentionally exposed this content format)
https://phabricator.wikimedia.org/T89769 "testQueryApiGetter timeout failure" (Wiki Data Query has become slower?)
https://phabricator.wikimedia.org/T128986 https://phabricator.wikimedia.org/T128994 ProofreadPage is doing a purge without write permission