ERROR: wait_cmd has lab failures: cmd=['/b/c/cbuild/repository/chromite/third_party/swarming.client/swarming.py', 'run', '--swarming', 'chromeos-proxy.appspot.com', '--task-summary-json', '/tmp/cbuildbot-tmp5zhsf9/tmprFYv0h/temp_summary.json', '--print-status-updates', '--timeout', '9000', '--raw-cmd', '--task-name', u'bob-paladin/R70-11010.0.0-rc2-provision', '--dimension', 'os', 'Ubuntu-14.04', '--dimension', 'pool', 'default', '--io-timeout', '9000', '--hard-timeout', '9000', '--expiration', '1200', u'--tags=priority:CQ', u'--tags=suite:provision', u'--tags=build:bob-paladin/R70-11010.0.0-rc2', u'--tags=task_name:bob-paladin/R70-11010.0.0-rc2-provision', u'--tags=board:bob', '--', '/usr/local/autotest/site_utils/run_suite.py', '--build', u'bob-paladin/R70-11010.0.0-rc2', '--board', u'bob', '--suite_name', u'provision', '--pool', u'cq', '--file_bugs', 'False', '--priority', 'CQ', '--timeout_mins', '90', '--retry', 'True', '--max_retries', '5', '--minimum_duts', '4', '--suite_args', "{u'num_required': 1}", '--offload_failures_only', 'False', '--job_keyvals', "{'cidb_build_stage_id': 90427466L, 'cidb_build_id': 2884612, 'datastore_parent_key': ('Build', 2884612, 'BuildStage', 90427466L)}", '--test_args', "{'fast': 'True'}", '-m', '231382860'].

We have same error on wizpig and elm
elm: https://cros-goldeneye.corp.google.com/chromeos/healthmonitoring/buildDetails?buildbucketId=8936996892682983136

wizpig: https://cros-goldeneye.corp.google.com/chromeos/healthmonitoring/buildDetails?buildbucketId=8936996860031398576

I'm tracking a set of symptoms that's affecting shards for multiple boards,
including the shards for wizpig and elm.  This bug is likely a duplicate.
The symptoms are covered in bug 878403.