oak-paladin failed at BuildPackages step:
https://cros-goldeneye.corp.google.com/chromeos/healthmonitoring/buildDetails?buildbucketId=8928592905023714304

Except it doesn't look like a package failed to build, instead the whole process failed right away.

10:11:22: INFO: RunCommand: /b/swarming/w/ir/cache/cbuild/repository/chromite/bin/cros_sdk 'PARALLEL_EMERGE_STATUS_FILE=/tmp/tmpGMPmb9' 'USE=chrome_internal' 'FEATURES=separatedebug' -- emerge-oak -pegNuvq '--with-bdeps=y' '--color=n' virtual/target-os virtual/target-os-dev virtual/target-os-test virtual/target-os-factory virtual/target-os-factory-shim chromeos-base/autotest-all in /b/swarming/w/ir/cache/cbuild/repository
10:13:57: ERROR: return code: 1

There is not a lot of information to go on here.  The only suspicious line is that it also reports:

hostname: Host name lookup failure

So possibly a temporary network issue?

Filing in case it happens again..