I was looking at disk utilization on integration-slave1006 today and noticed that there were a lot of /tmp/mw-ocg-latexer* directories. When I removed them just under 1G of disk space was freed.
These looked like they may be temporary files for tests that are leaked under some test failure scenario.
Version: unspecified
Severity: critical
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=72011