Please run hardware diagnostics on t-w864-ix-237 and re-image. Hit some resolution/graphic issue: https://treeherder.mozilla.org/logviewer.html#?job_id=121294856&repo=mozilla-esr52 image comparison, max difference: 255, number of differing pixels: 16
looks like this could also be caused by a bad/failing video card. i'll look into finding a spare for replacement.
diags said it fixed the bad drive, ive replaced the video card. if it fails again, i have a brand new spare drive we can replace. [email@example.com ~]$ fping !$ fping t-w864-ix-237.wintest.releng.scl3.mozilla.com t-w864-ix-237.wintest.releng.scl3.mozilla.com is alive [firstname.lastname@example.org ~]$ ssh !$ ssh t-w864-ix-237.wintest.releng.scl3.mozilla.com The authenticity of host 't-w864-ix-237.wintest.releng.scl3.mozilla.com (10.26.41.82)' can't be established. RSA key fingerprint is cd:e6:f5:7b:57:08:77:e0:11:ea:61:9b:eb:d2:d0:6a. Are you sure you want to continue connecting (yes/no)?