https://uberchromegw.corp.google.com/i/chromeos/builders/master-paladin/builds/16768

  File "/b/c/cbuild/repository/chromite/cbuildbot/stages/generic_stages.py", line 696, in Run
    self.PerformStage()
  File "/b/c/cbuild/repository/chromite/cbuildbot/stages/completion_stages.py", line 907, in PerformStage
    super(CommitQueueCompletionStage, self).PerformStage()
  File "/b/c/cbuild/repository/chromite/cbuildbot/stages/completion_stages.py", line 248, in PerformStage
    builder_statusess_fetcher.GetBuilderStatuses())
  File "/b/c/cbuild/repository/chromite/lib/builder_status_lib.py", line 599, in GetBuilderStatuses
    statuses = self._FetchBuilderStatuses()
  File "/b/c/cbuild/repository/chromite/lib/builder_status_lib.py", line 586, in _FetchBuilderStatuses
    statuses.update(self._FetchSlaveBuilderStatuses())
  File "/b/c/cbuild/repository/chromite/lib/builder_status_lib.py", line 557, in _FetchSlaveBuilderStatuses
    self.buildbucket_client, self.builders_array, self.dry_run)
  File "/b/c/cbuild/repository/chromite/lib/builder_status_lib.py", line 276, in __init__
    self._InitSlaveInfo()
  File "/b/c/cbuild/repository/chromite/lib/builder_status_lib.py", line 319, in _InitSlaveInfo
    self.db, self.master_build_id, self.buildbucket_info_dict)
  File "/b/c/cbuild/repository/chromite/lib/builder_status_lib.py", line 494, in GetAllSlaveCIDBStatusInfo
    slave_statuses = db.GetSlaveStatuses(
AttributeError: 'tuple' object has no attribute 'GetSlaveStatuses'