https://uberchromegw.corp.google.com/i/chromeos/builders/veyron_speedy-paladin/builds/1436/steps/CommitQueueSync/logs/stdio

Auto packing the repository in background for optimum performance.
See "git help gc" for manual housekeeping.
error: The last gc run reported the following. Please correct the root cause
and remove /b/cbuild/internal_master/.repo/projects/src/third_party/kernel/v3.8.git/gc.log.
Automatic cleanup will not be performed until the file is removed.

fatal: internal error: pack revindex fubar
error: failed to run repack