This started recently on inbound. Haven't seen it elsewhere yet. Inbound is closed for it. https://tbpl.mozilla.org/php/getParsedLog.php?id=19677179&tree=Mozilla-Inbound Ubuntu 12.04 mozilla-inbound debug test marionette on 2013-02-12 12:53:13 PST for push 6124f1fc8e3a slave: tst-linux32-ec2-084 12:54:43 INFO - Output received: 12:54:43 INFO - /builds/slave/test/build/application/firefox/firefox 12:54:43 INFO - ##### 12:54:43 INFO - ##### Running run-marionette step. 12:54:43 INFO - ##### 12:54:43 INFO - Running command: ['/builds/slave/test/build/venv/bin/python', '-u', '/builds/slave/test/build/tests/marionette/marionette/runtests.py', '--binary', '/builds/slave/test/build/application/firefox/firefox', '--address', 'localhost:2828', '--type', 'browser', '/builds/slave/test/build/tests/marionette/tests/testing/marionette/client/marionette/tests/unit-tests.ini'] 12:54:43 INFO - Copy/paste: /builds/slave/test/build/venv/bin/python -u /builds/slave/test/build/tests/marionette/marionette/runtests.py --binary /builds/slave/test/build/application/firefox/firefox --address localhost:2828 --type browser /builds/slave/test/build/tests/marionette/tests/testing/marionette/client/marionette/tests/unit-tests.ini 12:54:43 INFO - starting httpd 12:54:43 INFO - running webserver on http://10.134.56.98:45021/ 12:54:43 INFO - starting runner 12:54:43 INFO - Error: cannot open display: :2 12:54:43 INFO - nsStringStats 12:54:43 INFO - => mAllocCount: 43 12:54:43 INFO - => mReallocCount: 27 12:54:43 INFO - => mFreeCount: 24 -- LEAKED 19 !!! 12:54:43 INFO - => mShareCount: 68 12:54:43 INFO - => mAdoptCount: 0 12:54:43 INFO - => mAdoptFreeCount: 0 command timed out: 1200 seconds without output, attempting to kill process killed by signal 9 program finished with exit code -1 elapsedTime=1253.417448 ========= Finished '/tools/buildbot/bin/python scripts/scripts/marionette.py ...' failed (results: 2, elapsed: 20 mins, 54 secs) (at 2013-02-12 13:14:44.173838) =========

Comment on attachment 713110 [details] [diff] [review] fix where we get unittest-env from http://hg.mozilla.org/build/buildbot-configs/rev/b697901d0c03 landed, merged, started a reconfig ~15m ago.

I see green.