I can see lots of test failures for Marionette tests which only happen on Windows 10. And that since we moved to taskcluster. This bug is a tracking bug for all of those.
Depends on: 1386828
One reason for all those failures might be that the workers are just too slow compared to other platforms. But that would require that someone checks the performance of the tests.
Most of those failures seem to happen for the very first launch of Firefox. This is because in some or all cases the former job didn't cleanup correctly, and leaves a Firefox process around. See more details on bug 1397201 comment 86. We have to make sure that each job has a clean environment.
Depends on: 1416747
Since 5 days we reboot each Windows 10 worker (maybe only 64bit) now. As it looks like the number of failures have been massively decreased. I will wait for the next weekly OF comments before checking the deps on this bug.
OS: Unspecified → Windows
Hardware: Unspecified → x86_64
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