I think this is due to that waterfall still having two changesources configured, though they both point at the same repo now. I noticed this months ago but have never gotten around to fixing it.

This doesn't appear to be a new issue, and it isn't causing any outages, so I'm going to remove the troopers label from it.

I only see one change source here: https://uberchromegw.corp.google.com/i/chromium.webkit/changes
"GitilesPoller repo_url=https://chromium.googlesource.com/chromium/src"

This is maybe related to: https://bugs.chromium.org/p/chromium/issues/detail?id=552391

Actually removing the trooper label.

Who can help take a look at this?

Erik, who's the best person to handle this? Pawel?

Dirk, what did you mean in #1 exactly? I didn't see anything obvious when looking at the buildbot configs for chromium.webkit. Please pass back if this needs more investigating.

I think I saw this get fixed at some point by phajdan.jr@, but I don't remember the CL.

I don't see the problem now either. Closing.