This is from the build logs:

cmd=['/b/swarming/w/ir/cache/cbuild/repository/chromite/third_party/swarming.client/swarming.py', 'run', '--swarming', 'chromeos-proxy.appspot.com', '--task-summary-json', '/b/swarming/w/ir/tmp/t/cbuildbot-tmpFoXqlw/tmpJoIAJU/temp_summary.json', '--print-status-updates', '--timeout', '9000', '--raw-cmd', '--task-name', u'bob-paladin/R72-11178.0.0-rc2-bvt-inline', '--dimension', 'os', 'Ubuntu-14.04', '--dimension', 'pool', 'default', '--io-timeout', '9000', '--hard-timeout', '9000', '--expiration', '1200', u'--tags=priority:CQ', u'--tags=suite:bvt-inline', u'--tags=build:bob-paladin/R72-11178.0.0-rc2', u'--tags=task_name:bob-paladin/R72-11178.0.0-rc2-bvt-inline', u'--tags=board:bob', '--', '/usr/local/autotest/site_utils/run_suite.py', '--build', u'bob-paladin/R72-11178.0.0-rc2', '--board', u'bob', '--suite_name', u'bvt-inline', '--pool', u'cq', '--file_bugs', 'False', '--priority', 'CQ', '--timeout_mins', '90', '--retry', 'True', '--max_retries', '5', '--minimum_duts', '4', '--offload_failures_only', 'False', '--job_keyvals', "{'cidb_build_stage_id': 96507145L, 'cidb_build_id': 3057672, 'datastore_parent_key': ('Build', 3057672, 'BuildStage', 96507145L)}", '--test_args', "{'fast': 'True'}", '-m', '250455016']
  01:27:59: ERROR: wait_cmd has lab failures: cmd=['/b/swarming/w/ir/cache/cbuild/repository/chromite/third_party/swarming.client/swarming.py', 'run', '--swarming', 'chromeos-proxy.appspot.com', '--task-summary-json', '/b/swarming/w/ir/tmp/t/cbuildbot-tmpFoXqlw/tmpJoIAJU/temp_summary.json', '--print-status-updates', '--timeout', '9000', '--raw-cmd', '--task-name', u'bob-paladin/R72-11178.0.0-rc2-bvt-inline', '--dimension', 'os', 'Ubuntu-14.04', '--dimension', 'pool', 'default', '--io-timeout', '9000', '--hard-timeout', '9000', '--expiration', '1200', u'--tags=priority:CQ', u'--tags=suite:bvt-inline', u'--tags=build:bob-paladin/R72-11178.0.0-rc2', u'--tags=task_name:bob-paladin/R72-11178.0.0-rc2-bvt-inline', u'--tags=board:bob', '--', '/usr/local/autotest/site_utils/run_suite.py', '--build', u'bob-paladin/R72-11178.0.0-rc2', '--board', u'bob', '--suite_name', u'bvt-inline', '--pool', u'cq', '--file_bugs', 'False', '--priority', 'CQ', '--timeout_mins', '90', '--retry', 'True', '--max_retries', '5', '--minimum_duts', '4', '--offload_failures_only', 'False', '--job_keyvals', "{'cidb_build_stage_id': 96507145L, 'cidb_build_id': 3057672, 'datastore_parent_key': ('Build', 3057672, 'BuildStage', 96507145L)}", '--test_args', "{'fast': 'True'}", '-m', '250455016'].
  Exception will be raised in the next json_dump run.
  Autotest instance created: cautotest-prod
  10-21-2018 [00:22:16] Created suite job: http://cautotest-prod/afe/#tab_id=view_job&object_id=250455016



Reference:

https://cros-goldeneye.corp.google.com/chromeos/healthmonitoring/buildDetails?buildbucketId=8932080755042039024

https://cros-goldeneye.corp.google.com/chromeos/healthmonitoring/buildDetails?buildbucketId=8932080718931630208

https://cros-goldeneye.corp.google.com/chromeos/healthmonitoring/buildDetails?buildbucketId=8932080665155382400

https://cros-goldeneye.corp.google.com/chromeos/healthmonitoring/buildDetails?buildbucketId=8932080652404326480