Unfortunately, it's not entirely green at the moment. Permafail across all flavors: https://treeherder.mozilla.org/logviewer.html#?job_id=31673215&repo=try https://treeherder.mozilla.org/logviewer.html#?job_id=31673187&repo=try https://treeherder.mozilla.org/logviewer.html#?job_id=31673258&repo=try Also makes bug 1210289 permafail on e10s: https://treeherder.mozilla.org/logviewer.html#?job_id=31673228&repo=try And LSAN issues like mochitest-media hit (in various directories): https://treeherder.mozilla.org/logviewer.html#?job_id=31672322&repo=try https://treeherder.mozilla.org/logviewer.html#?job_id=31672342&repo=try https://treeherder.mozilla.org/logviewer.html#?job_id=31672273&repo=try https://treeherder.mozilla.org/logviewer.html#?job_id=31672365&repo=try

once the existing bugs are cleaned up, I will revisit this, right now I suspect resolving INPUT vs DIV will make a difference in more tests than what I have specifically filed for

Latest try run https://treeherder.mozilla.org/#/jobs?repo=try&revision=475677a368d33cfed57c08d2fdd88ea7b620adc7

Adds on the try run in previous comment with rebuild https://treeherder.mozilla.org/#/jobs?repo=try&revision=0e58a7a54798912a2ba18d4cd9dcc3a0dfebb9e5

:greg, can you push to try to see if mochitest-plain will work just fine? include android and all linux platforms as well, ideally --rebuild 5

Sounds good, here's the try push: https://treeherder.mozilla.org/#/jobs?repo=try&revision=8d191df67e0a14bbde01312a28d827587fa9e8fb

Here's the latest try run with mochitest-plain on ubuntu 16.04: https://treeherder.mozilla.org/#/jobs?repo=try&revision=92024ebe593eb53f6e2680fef29b28c465900a89&filter-tier=1&filter-tier=2&filter-tier=3 It's getting better now. Also, even though bug 1357082 is reopened, it's only popped up on windows so far. And there must've been some change that came and helped out the test_ext_webrequest_basic.html error because it's become quite rare, maybe we could skip it or just leave it alone? There are some other problems that popped up on plain test chunks but none of them are new and are already known so I've retriggered them about 30-40 times to see if the frequency has changed.

looking at that try run linux32-debug mochitest-e10s-6 is concerning, but it is just timing out; hard to know if that is something expected on non try branches, or if this is related to the 16.04 image; either way, we can figure this out after the move. :gmierz, please upload a patch and lets migrate!

Comment on attachment 8876843 [details] Bug 1319782 - Move mochitest plain to Ubuntu 16.04. https://reviewboard.mozilla.org/r/148178/#review152522

Pushed by jmaher@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/0932844da783 Move mochitest plain to Ubuntu 16.04. r=jmaher

Great! And yes I agree, chunk 6 is odd, but I've looked at the latest failure frequency here: https://bugzilla.mozilla.org/show_bug.cgi?id=1204281#c359 And it doesn't seem like it increased by any significant amount but I guess only time will tell now.