I forgot to actually post an update on December 29th. I was able to fix the listed Mn failures from the last try push, but saw that wpt tests are basically perma-failing now with this change: https://treeherder.mozilla.org/jobs?repo=try&revision=29047464b77539131dfd95c6e6a2e3c2e915b94a I've to take a look at this problem next.
Bug 1664165 Comment 28 Edit History
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I forgot to actually post an update on December 29th. I was able to fix the listed Mn failures from the last try push, but saw that wpt tests are basically perma-failing now with this change: https://treeherder.mozilla.org/jobs?repo=try&revision=29047464b77539131dfd95c6e6a2e3c2e915b94a I've to take a look at this problem next. Here a new try build with Marionette trace logging enabled: https://treeherder.mozilla.org/jobs?repo=try&revision=7166516525b3c8d3da40a943a626681363290adc