/gcbrun not triggering updated checks with Google Cloud Build

[jrp-enf]

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We've just started seeing /gcbrun not trigger Google cloud build checks.

That is, the build starts in Google cloud build, but the check on the PR doesn't go to 'pending' or 'started X minutes ago'.

On one PR I rebased and force-pushed, and it went into pending, starting and it finished, but just doing it with /gcbrun doesn't.

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[jrp-enf]

I've found the problem:
The trigger was in the global location. I had to change the trigger to be in the same location as the private pool.

[jrp-enf]

We thought that we had found the problem, but it recurred. We've subsequently moved back to a global trigger in the global pool, and it's still failing to update GitHub.

Another person has reported what seems to be the same problem: https://issuetracker.google.com/issues/412291637

[jeremiah-snee-openx]

Was just about to post the link for this.

[medvec-martin]

A temporary workaround that works for me is to re-run failed checks. Pushing this button runs the trigger and updates the check correctly.

[jrp-enf]

Google apparently fixed /gcbrun, which has started working again.