Charlie, can you triage? Is it a device issue?

https://uberchromegw.corp.google.com/i/chromium.perf/builders/Mac%20Retina%20Perf%20%285%29/builds/5474

https://uberchromegw.corp.google.com/i/chromium.perf/builders/Mac%20Retina%20Perf%20%285%29/builds/5475/steps/battor.tough_video_cases/logs/stdio

[ RUN      ] video.html?src=crowd.wav&type=audio
INFO:root:Trace config file string: {"trace_config": {"included_categories": ["toplevel", "rail", "blink.console"], "record_mode": "record-as-much-as-possible"}}
INFO:py_utils.cloud_storage:Downloading gs://chromium-telemetry/binary_dependencies/battor/battor_agent_binary_1e953cd2c173f46c5ffb252d1fb97dab0f629bc0 to /b/c/b/Mac_Retina_Perf__5_/src/third_party/catapult/common/battor/bin/darwin/x86_64/battor_agent
INFO:py_utils.cloud_storage:Downloading gs://chromium-telemetry/binary_dependencies/battor/avrdude_binary_6de6324c279ea75c79c68cab4c2ddcc68da1b286 to /b/c/b/Mac_Retina_Perf__5_/src/third_party/catapult/common/battor/bin/darwin/x86_64/avrdude
CRITICAL:root:BattOr shell was not properly closed. Killing now.
INFO:py_utils.cloud_storage:Uploading /tmp/tmp3hTXfH to gs://chrome-telemetry-output/battor-serial-log-2016-11-09_02-22.txt-98859.txt
View BattOr serial log at https://console.developers.google.com/m/cloudstorage/b/chrome-telemetry-output/o/battor-serial-log-2016-11-09_02-22.txt-98859.txt
WARNING:root:Cannot dump browser state: No browser.
Traceback (most recent call last):
  File "/b/c/b/Mac_Retina_Perf__5_/src/third_party/catapult/telemetry/telemetry/internal/story_runner.py", line 79, in _RunStoryAndProcessErrorIfNeeded
    test.WillRunStory(state.platform)
  File "/b/c/b/Mac_Retina_Perf__5_/src/third_party/catapult/telemetry/telemetry/web_perf/timeline_based_measurement.py", line 282, in WillRunStory
    platform.tracing_controller.StartTracing(self._tbm_options.config)
  File "/b/c/b/Mac_Retina_Perf__5_/src/third_party/catapult/telemetry/telemetry/core/tracing_controller.py", line 43, in StartTracing
    self._tracing_controller_backend.StartTracing(tracing_config, timeout)
  File "/b/c/b/Mac_Retina_Perf__5_/src/third_party/catapult/telemetry/telemetry/internal/platform/tracing_controller_backend.py", line 91, in StartTracing
    if agent.StartAgentTracing(config, timeout):
  File "/b/c/b/Mac_Retina_Perf__5_/src/third_party/catapult/telemetry/telemetry/internal/platform/tracing_agent/battor_tracing_agent.py", line 73, in StartAgentTracing
    self._battor.StartTracing()
  File "/b/c/b/Mac_Retina_Perf__5_/src/third_party/catapult/common/battor/battor/battor_wrapper.py", line 187, in StartTracing
    self._SendBattOrCommand(self._START_TRACING_CMD)
  File "/b/c/b/Mac_Retina_Perf__5_/src/third_party/catapult/common/battor/battor/battor_wrapper.py", line 302, in _SendBattOrCommand
    'Outputted: %s' % (cmd, status))
BattOrError: BattOr did not complete command 'StartTracing' correctly.
Outputted: [1109/022207:FATAL:battor_agent_bin.cc(89)] Fatal error when communicating with the BattOr: TIMEOUT