https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/ArticleRatings/+/544452/
https://integration.wikimedia.org/ci/job/quibble-vendor-mysql-php72-docker/26636/console
Maybe these lines are the relevants:
14:40:23 Syncing... 14:40:24 rsync: failed to set times on "/cache/.": Operation not permitted (1) 14:40:44 rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1668) [generator=3.1.2]