Chrome Version: (copy from chrome://version)
OS: (e.g. Win10, MacOS 10.12, etc...)

What steps will reproduce the problem?
(1) CQ fails to update manifest-versions in cbuild_launch phase
(2)
(3)

What is the expected result?

What happens instead?

master-paladin CQ fails to get going:

18:15:58: ERROR: Failed to generate LKGM Candidate. error: return code: 1; command: git push origin temp_auto_checkin_branch:refs/heads/master
  To https://chrome-internal.googlesource.com/chromeos/manifest-versions
   ! [rejected]                temp_auto_checkin_branch -> master (fetch first)
  error: failed to push some refs to 'https://chrome-internal.googlesource.com/chromeos/manifest-versions'
  hint: Updates were rejected because the remote contains work that you do
  hint: not have locally. This is usually caused by another repository pushing
  hint: to the same ref. You may want to first integrate the remote changes
  hint: (e.g., 'git pull ...') before pushing again.
  hint: See the 'Note about fast-forwards' in 'git push --help' for details.



Please use labels and text to provide additional information.

If this is a regression (i.e., worked before), please consider using the
bisect tool (https://www.chromium.org/developers/bisect-builds-py) to help
us identify the root cause and more rapidly triage the issue.

For graphics-related bugs, please copy/paste the contents of the about:gpu
page at the end of this report.



failed buils:

https://cros-goldeneye.corp.google.com/chromeos/healthmonitoring/buildDetails?buildbucketId=8927112761877344480

logs here:

https://logs.chromium.org/logs/chromeos/buildbucket/cr-buildbucket.appspot.com/8927112761877344480/+/steps/CommitQueueSync/0/stdout