https://cros-goldeneye.corp.google.com/chromeos/healthmonitoring/buildDetails?builderName=tael-paladin&buildNumber=1404


22:09:16: ERROR: Traceback (most recent call last):
  File "/b/c/cbuild/repository/chromite/cbuildbot/stages/generic_stages.py", line 702, in Run
    self.PerformStage()
  File "/b/c/cbuild/repository/chromite/cbuildbot/stages/android_stages.py", line 162, in PerformStage
    versions, branches = self._UpdateBoardDictsForAndroidBuildInfo()
  File "/b/c/cbuild/repository/chromite/cbuildbot/stages/android_stages.py", line 137, in _UpdateBoardDictsForAndroidBuildInfo
    version = self._run.DetermineAndroidVersion(boards=[board])
  File "/b/c/cbuild/repository/chromite/cbuildbot/cbuildbot_run.py", line 984, in FuncWrapper
    return result(*args, **kwargs)
  File "/b/c/cbuild/repository/chromite/cbuildbot/cbuildbot_run.py", line 893, in DetermineAndroidVersion
    package = self.DetermineAndroidPackage(board)
  File "/b/c/cbuild/repository/chromite/cbuildbot/cbuildbot_run.py", line 866, in DetermineAndroidPackage
    packages = portage_util.GetPackageDependencies(board, 'virtual/target-os')
  File "/b/c/cbuild/repository/chromite/lib/portage_util.py", line 1828, in GetPackageDependencies
    capture_output=True).output.splitlines()
  File "/b/c/cbuild/repository/chromite/lib/cros_build_lib.py", line 647, in RunCommand
    raise RunCommandError(msg, cmd_result)
RunCommandError: return code: 1; command: /b/c/cbuild/repository/chromite/bin/cros_sdk -- emerge-tael -p --cols --quiet --root /var/empty -e virtual/target-os