OUTPUT: image is 'elm-release-tryjob/R67-10510.0.0-b2407745'
OUTPUT: status is pass
trybot_url:           http://cros-goldeneye/chromeos/healthmonitoring/buildDetails?buildbucketId=8951275366605006960
Traceback (most recent call last):
  File "./buildbot_test_toolchains.py", line 343, in <module>
    retval = Main(sys.argv)
  File "./buildbot_test_toolchains.py", line 339, in Main
    return fc.DoAll()
  File "./buildbot_test_toolchains.py", line 279, in DoAll
    vanilla_image = self._GetVanillaImageName(trybot_image)
  File "./buildbot_test_toolchains.py", line 103, in _GetVanillaImageName
    assert mo
AssertionError