SW-WR jobs aren't running in mozilla-beta, except for the talos jobs. For example, I added mochitest jobs in bug 1693383 which don't seem to have any explicit filter for mozilla-beta/mozilla-release to my eyes, but we aren't seeing them run in beta. This was merged as part of 88.

we run into an interesting pickle here. The m-c -swr jobs are run on *-qr/debug platforms:
https://treeherder.mozilla.org/jobs?repo=mozilla-central&revision=09e277c5edc3a2c315e334d7bb1ddab0a5d26e90&searchStr=swr%2C

on mozilla-beta we only run linux64-debug:
https://treeherder.mozilla.org/jobs?repo=mozilla-beta&tier=1%2C2%2C3&revision=8090a3a2b5879113e55f65ee98d0283dd0026a48&searchStr=debug

this was a change we made a long while back while optimizing our trees for costs- we found that debug on beta was not finding bugs and taking a lot of time and cpu- so we reduced it and kept linux.

Maybe it would make best sense to run linux64-qr/debug instead of linux64/debug, that way we get coverage on webrender and pick up these -swr jobs.

:aosmond, are there other parameters we should be considering in resolving this bug?

these jobs seem to be running just fine on mozilla-beta now.