I found an issue- in web-platform.yml there was a regex change to switch worker from virtual -> virtual-with-gpu, this ended up applying to win10-32* instead of only win10-64*.

testing that fix and will resubmit, etc.

Joel, are these supposed to run on every push? One look at treeherder and it seems like those are creating backlogs on https://firefox-ci-tc.services.mozilla.com/worker-manager/gecko-t%2Fwin11-64-2009-gpu and https://firefox-ci-tc.services.mozilla.com/worker-manager/gecko-t%2Fwin11-64-2009.
Earthangel graphs:

• https://earthangel-b40313e5.influxcloud.net/d/slXwf4emz/workers?var-provisioner=gecko-t&var-workerType=win11-64-2009&orgId=1&refresh=1m
• https://earthangel-b40313e5.influxcloud.net/d/slXwf4emz/workers?var-provisioner=gecko-t&var-workerType=win11-64-2009-gpu&orgId=1&refresh=1m

:marco, I believe we have a short period of time with a new config where it runs every commit and mozci ignores optimizing it? Is there anything to do for optimization?

(In reply to Joel Maher ( :jmaher ) (UTC -8) from comment #7)

:marco, I believe we have a short period of time with a new config where it runs every commit and mozci ignores optimizing it? Is there anything to do for optimization?

There is a list of configs and a "cost" associated to them in bugbug. This value is used to choose a platform for tests to run on when a test is considered equally likely to fail on two configurations.
So the only thing to choose is whether we prefer running "cross-platform failing" tests on Windows 11 over Windows 10 or the other way around. I assume Win11, so I will set the cost so that Win11 is preferred over Win10.

Backed out for causing wpt unexpected passes.

Push with failures: https://treeherder.mozilla.org/jobs?repo=autoland&fromchange=fa64d4d68a0c9fa6b9232d1c1a577bc6d0dc0854&searchStr=windows%2C10%2Cx64%2C2004%2Cwebrender%2Cdebug%2Cweb%2Cplatform%2Ctests%2Ctest-windows10-64-2004-qr%2Fdebug-web-platform-tests-reftest%2Cwr2&tochange=25a8668d92431d469b443f0f2030328bab754aea&group_state=expanded&selectedTaskRun=cXC8xlCHRseJ_jVzvp-h8A.0

Failure log: https://treeherder.mozilla.org/logviewer?job_id=406835506&repo=autoland

Backout link: https://hg.mozilla.org/integration/autoland/rev/25a8668d92431d469b443f0f2030328bab754aea

this is the reason for backout:

1. windows10-64-2004.*-qr/.*: virtual-with-gpu -> windows.*-qr/.*: virtual-with-gpu <- this turned win10-32 to run on gpu
2. windows10-64-2004.*-qr/.*: virtual-with-gpu -> windows.*-64*-qr/.*: virtual-with-gpu <- this is a bad regex, so win10-64 didn't run on gpu

https://hg.mozilla.org/mozilla-central/rev/adce45ea7383