Hello, Jenkins jobs relying on HHVM had troubles today exiting with: /usr/lib/x86_64-linux-gnu/hhvm/extensions/20150212/tidy.so: cannot open shared object file: No such file or directory The root cause is installing libtidy-dev ends up uninstall the HHVM tidy extension (hhvm-tidy). The issue occurred between 16:20 UTC and 18:45 UTC. To the best of my knowledge it is fully solved. Sorry for the inconvenience :( Ref: https://phabricator.wikimedia.org/T169004 Follow up task: https://phabricator.wikimedia.org/T169008 -- Antoine "hashar" Musso