https://uberchromegw.corp.google.com/i/chromeos/builders/sentry-release/builds/574

************************************************************
** Finished Stage HWTest [bvt-inline] - Tue, 15 Nov 2016 08:13:07 -0800 (PST)
************************************************************
Traceback (most recent call last):
  File "/b/cbuild/internal_master/chromite/lib/parallel.py", line 441, in _Run
    self._task(*self._task_args, **self._task_kwargs)
  File "/b/cbuild/internal_master/chromite/cbuildbot/stages/generic_stages.py", line 560, in Run
    self.PerformStage()
  File "/b/cbuild/internal_master/chromite/cbuildbot/stages/test_stages.py", line 385, in PerformStage
    debug=debug, subsystems=subsystems, skip_duts_check=skip_duts_check)
  File "/b/cbuild/internal_master/chromite/lib/failures_lib.py", line 172, in wrapped_functor
    return functor(*args, **kwargs)
  File "/b/cbuild/internal_master/chromite/cbuildbot/commands.py", line 948, in RunHWTestSuite
    _HWTestWait(cmd, job_id, **swarming_args)
  File "/b/cbuild/internal_master/chromite/cbuildbot/commands.py", line 1187, in _HWTestWait
    **kwargs)
  File "/b/cbuild/internal_master/chromite/cbuildbot/swarming_lib.py", line 153, in RunSwarmingCommandWithRetries
    return retry_util.RetryCommand(RunSwarmingCommand, max_retry, *args, **kwargs)
  File "/b/cbuild/internal_master/chromite/lib/retry_util.py", line 218, in RetryCommand
    return GenericRetry(ShouldRetry, max_retry, functor, *args, **kwargs)
  File "/b/cbuild/internal_master/chromite/lib/retry_util.py", line 115, in GenericRetry
    ret = functor(*args, **kwargs)
  File "/b/cbuild/internal_master/chromite/cbuildbot/swarming_lib.py", line 92, in RunSwarmingCommand
    result = cros_build_lib.RunCommand(swarming_cmd, *args, **kwargs)
  File "/b/cbuild/internal_master/chromite/lib/cros_build_lib.py", line 593, in RunCommand
    (cmd_result.output, cmd_result.error) = proc.communicate(input)
  File "/usr/lib/python2.7/subprocess.py", line 796, in communicate
    self.wait()
  File "/usr/lib/python2.7/subprocess.py", line 1376, in wait
    pid, sts = _eintr_retry_call(os.waitpid, self.pid, 0)
  File "/usr/lib/python2.7/subprocess.py", line 476, in _eintr_retry_call
    return func(*args)
  File "/b/cbuild/internal_master/chromite/lib/cros_build_lib.py", line 340, in _KillChildProcess
    if not signals.RelaySignal(original_handler, signum, frame):
  File "/b/cbuild/internal_master/chromite/lib/signals.py", line 26, in RelaySignal
    handler(signum, frame)
  File "/b/cbuild/internal_master/chromite/lib/commandline.py", line 731, in _DefaultHandler
    signum, 'Received signal %i; shutting down' % (signum,))
_ShutDownException: (15, 'Received signal 15; shutting down')
08:13:07: WARNING: No output from <_BackgroundTask(_BackgroundTask-7:7:4, started)> for 8640 seconds
  File "chromite/bin/cbuildbot", line 168, in <module>
    DoMain()
  File "chromite/bin/cbuildbot", line 164, in DoMain
    commandline.ScriptWrapperMain(FindTarget)
  File "/b/cbuild/internal_master/chromite/lib/commandline.py", line 834, in ScriptWrapperMain
    ret = target(argv[1:])
  File "/b/cbuild/internal_master/chromite/scripts/cbuildbot.py", line 1307, in main
    _RunBuildStagesWrapper(options, site_config, build_config)
  File "/b/cbuild/internal_master/chromite/scripts/cbuildbot.py", line 248, in _RunBuildStagesWrapper
    if not builder.Run():
  File "/b/cbuild/internal_master/chromite/cbuildbot/builders/generic_builders.py", line 316, in Run
    self.RunStages()
  File "/b/cbuild/internal_master/chromite/cbuildbot/builders/simple_builders.py", line 474, in RunStages
    super(DistributedBuilder, self).RunStages()
  File "/b/cbuild/internal_master/chromite/cbuildbot/builders/simple_builders.py", line 334, in RunStages
    self._RunDefaultTypeBuild()
  File "/b/cbuild/internal_master/chromite/cbuildbot/builders/simple_builders.py", line 321, in _RunDefaultTypeBuild
    self.RunBuildStages()
  File "/b/cbuild/internal_master/chromite/cbuildbot/builders/simple_builders.py", line 282, in RunBuildStages
    with parallel.BackgroundTaskRunner(task_runner) as queue:
  File "/usr/lib/python2.7/contextlib.py", line 17, in __enter__
    return self.gen.next()
  File "/b/cbuild/internal_master/chromite/lib/parallel.py", line 745, in BackgroundTaskRunner
    with _BackgroundTask.ParallelTasks(steps, halt_on_error=halt_on_error):
  File "/usr/lib/python2.7/contextlib.py", line 17, in __enter__
    return self.gen.next()
  File "/b/cbuild/internal_master/chromite/lib/parallel.py", line 532, in ParallelTasks
    task.start()
  File "/b/cbuild/internal_master/chromite/lib/parallel.py", line 388, in start
    return multiprocessing.Process.start(self)
  File "/usr/lib/python2.7/multiprocessing/process.py", line 130, in start
    self._popen = Popen(self)
  File "/usr/lib/python2.7/multiprocessing/forking.py", line 126, in __init__
    code = process_obj._bootstrap()
  File "/usr/lib/python2.7/multiprocessing/process.py", line 258, in _bootstrap
    self.run()
  File "/b/cbuild/internal_master/chromite/lib/parallel.py", line 399, in run
    errors = self._Run()
  File "/b/cbuild/internal_master/chromite/lib/parallel.py", line 441, in _Run
    self._task(*self._task_args, **self._task_kwargs)
  File "/b/cbuild/internal_master/chromite/lib/parallel.py", line 602, in TaskRunner
    task(*x, **task_kwargs)
  File "/b/cbuild/internal_master/chromite/cbuildbot/builders/simple_builders.py", line 128, in _RunBackgroundStagesForBoardAndMarkAsSuccessful
    self._RunBackgroundStagesForBoard(builder_run, board)
  File "/b/cbuild/internal_master/chromite/cbuildbot/builders/simple_builders.py", line 220, in _RunBackgroundStagesForBoard
    lambda: self._RunHWTests(builder_run, board),
  File "/b/cbuild/internal_master/chromite/lib/parallel.py", line 674, in RunParallelSteps
    halt_on_error=halt_on_error):
  File "/usr/lib/python2.7/contextlib.py", line 17, in __enter__
    return self.gen.next()
  File "/b/cbuild/internal_master/chromite/lib/parallel.py", line 532, in ParallelTasks
    task.start()
  File "/b/cbuild/internal_master/chromite/lib/parallel.py", line 388, in start
    return multiprocessing.Process.start(self)
  File "/usr/lib/python2.7/multiprocessing/process.py", line 130, in start
    self._popen = Popen(self)
  File "/usr/lib/python2.7/multiprocessing/forking.py", line 126, in __init__
    code = process_obj._bootstrap()
  File "/usr/lib/python2.7/multiprocessing/process.py", line 258, in _bootstrap
    self.run()
  File "/b/cbuild/internal_master/chromite/lib/parallel.py", line 399, in run
    errors = self._Run()
  File "/b/cbuild/internal_master/chromite/lib/parallel.py", line 441, in _Run
    self._task(*self._task_args, **self._task_kwargs)
  File "/b/cbuild/internal_master/chromite/cbuildbot/builders/simple_builders.py", line 220, in <lambda>
    lambda: self._RunHWTests(builder_run, board),
  File "/b/cbuild/internal_master/chromite/cbuildbot/builders/simple_builders.py", line 112, in _RunHWTests
    self._RunParallelStages(parallel_stages)
  File "/b/cbuild/internal_master/chromite/cbuildbot/builders/generic_builders.py", line 118, in _RunParallelStages
    parallel.RunParallelSteps(steps)
  File "/b/cbuild/internal_master/chromite/lib/parallel.py", line 675, in RunParallelSteps
    pass
  File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
    self.gen.next()
  File "/b/cbuild/internal_master/chromite/lib/parallel.py", line 546, in ParallelTasks
    task_errors = task.Wait()
  File "/b/cbuild/internal_master/chromite/lib/parallel.py", line 363, in Wait
    traceback.print_stack()