http://trac.webkit.org/changeset/100326 made the GTK bots incredibly flaky, more than 40...
Disabling ref tests fixes this issue, we should investigate this further and re-enable ref tests at some point but what we need now is stable bots.
Thanks to Zan for the help on this.
Created attachment 115563 [details]
Comment on attachment 115563 [details]
OK. Please open a bug to track this, thanks!
Committed r100605: <http://trac.webkit.org/changeset/100605>
Sorry about that! I'll see if I can repro.
(In reply to comment #4)
> Sorry about that! I'll see if I can repro.
A basic patch that fixes this is up at bug #72601. It's more of a quick hack, but the problem was that DriverProxy created two drivers, both using the same Xvfb instance, which caused the flakiness.