Build retries are failing with the same error.  Escalating to P0 since this is going to block six boards from being included in the M71 stable refresh (including eve).

Wrong queue.
--> CI bobby.

Initially it looks like the root cause is this CL:   https://chromium-review.git.corp.google.com/c/chromiumos/chromite/+/1373992

Excerpt from the log:
return code: 1; command: /b/swarming/w/ir/cache/cbuild/repository/chromite/bin/cros_mark_as_stable commit --all '--boards=eve' '--drop_file=/b/swarming/w/ir/cache/cbuild/repository/src/scripts/cbuildbot_package.list' --buildroot /b/swarming/w/ir/cache/cbuild/repository --overlay-type both
cmd=['/b/swarming/w/ir/cache/cbuild/repository/chromite/bin/cros_mark_as_stable', 'commit', '--all', u'--boards=eve', '--drop_file=/b/swarming/w/ir/cache/cbuild/repository/src/scripts/cbuildbot_package.list', '--buildroot', '/b/swarming/w/ir/cache/cbuild/repository', '--overlay-type', u'both'], cwd=/b/swarming/w/ir/cache/cbuild/repository
Running this command by hand on the bot does fail due to the use of the drop_file option.  

-- Mike

http://crrev.com/c/1406910 has been chumped to resolve the issue.

Sorry for the inconvenience.  Please retry the boards in question.  

-- Mike

Thanks, rebuilding winky since it was the first to fail with the re-try today

Confirmed fixed with rebuild attempts

[Auto-generated comment by a script] We noticed that this issue is targeted for M-71; it appears the fix may have landed after branch point, meaning a merge might be required. The owner of this bug should confirm if a merge is required here. If so, add Merge-Request-71 label and indicate which commits/CLs are to be merged. Otherwise, remove Merge-TBD label. Thanks.

Hey, I see this happening for grunt now in M72. Same Issue?

https://cros-goldeneye.corp.google.com/chromeos/healthmonitoring/buildDetails?id=3362576

23:03:36: ERROR: /b/swarming/w/ir/cache/cbuild/repository/chromite/bin/cros_mark_as_stable failed (code=1) 

This does appear to be the same issue.  Some confusion regarding the branched  code as the changes were made in ToT and resolved the issue.  

Will look at cherry-picking the change back to 72 to resolve.  

-- Mike

Not the same issue. The error is:

23:02:53: ERROR: Package chromeos-kernel-experimental has a chromeos-version.sh script but it returned no valid version for "/b/swarming/w/ir/cache/cbuild/repository/src/third_party/kernel/experimental"

Please open a new bug and assign it to the Kernel team. Or maybe djmm@ already did since he reported a similar issue yesterday: https://bugs.chromium.org/p/chromium/issues/detail?id=921764#c8