Since a few minutes after reimaging tin, the /srv/mediwaiki-staging directory on both the scap masters is utterly broken.
- wikiversions.php is not present
- All directories like php-1.27.0-wmf.10/ are empty
It seems that for some reason the /srv/mediawiki-staging directory was cloned from tin to mira before the rsync in the other direction was performed.
We have no idea how that happened at the moment, but the fact is we need to fix this.