https://ci.chromium.org/buildbot/tryserver.chromium.android/linux_android_rel_ng/446812
https://chromium-swarm.appspot.com/task?id=3a43b3d5375e2e10&refresh=10&show_raw=1

ERROR) 2017-12-06 08:34:01,686 pid=1444  atexit_with_log._WrappedFn:16  Exception running <function _ReenableChargingIfNeeded at 0x7f3d512cc8c0>
Traceback (most recent call last):
  File "/b/swarming/w/ir/third_party/catapult/common/py_utils/py_utils/atexit_with_log.py", line 13, in _WrappedFn
    function(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/platform/power_monitor/android_power_monitor_controller.py", line 11, in _ReenableChargingIfNeeded
    if not battery.GetCharging():
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/decorators.py", line 57, in timeout_retry_wrapper
    retry_if_func=retry_if_func)
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/utils/timeout_retry.py", line 157, in Run
    error_log_func=error_log_func)
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/utils/reraiser_thread.py", line 186, in JoinAll
    self._JoinAll(watcher, timeout)
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/utils/reraiser_thread.py", line 158, in _JoinAll
    thread.ReraiseIfException()
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/utils/reraiser_thread.py", line 81, in run
    self._ret = self._func(*self._args, **self._kwargs)
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/utils/timeout_retry.py", line 150, in <lambda>
    child_thread = reraiser_thread.ReraiserThread(lambda: func(*args, **kwargs),
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/decorators.py", line 47, in impl
    return f(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/battery_utils.py", line 377, in GetCharging
    battery_info = self.GetBatteryInfo()
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/decorators.py", line 51, in timeout_retry_wrapper
    return impl()
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/decorators.py", line 47, in impl
    return f(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/battery_utils.py", line 355, in GetBatteryInfo
    ['dumpsys', 'battery'], check_return=True)[1:]:
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/decorators.py", line 51, in timeout_retry_wrapper
    return impl()
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/decorators.py", line 47, in impl
    return f(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/device_utils.py", line 1063, in RunShellCommand
    output = handle_large_output(cmd, large_output)
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/device_utils.py", line 1032, in handle_large_output
    return handle_large_command(cmd)
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/device_utils.py", line 1014, in handle_large_command
    return handle_check_return(cmd)
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/device_utils.py", line 1005, in handle_check_return
    return run(cmd)
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/device_utils.py", line 1001, in run
    return self.adb.Shell(cmd)
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/sdk/adb_wrapper.py", line 505, in Shell
    output = self._RunDeviceAdbCmd(args, timeout, retries, check_error=False)
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/sdk/adb_wrapper.py", line 301, in _RunDeviceAdbCmd
    check_error=check_error)
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/decorators.py", line 51, in timeout_retry_wrapper
    return impl()
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/decorators.py", line 47, in impl
    return f(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/devil/devil/android/sdk/adb_wrapper.py", line 278, in _RunAdbCmd
    raise device_errors.DeviceUnreachableError(device_serial)
DeviceUnreachableError: 0cbc70cb0c36f32a
**Non zero exit code**
If you don't see any error stack, this could have been a native crash. Consider installing faulthandler (https://faulthandler.readthedocs.io/) for more useful error message
Running ['/usr/bin/python', '../../tools/perf/run_tests', '-v', '--browser=android-chromium', '--device=android', '--total-shards=15', '--shard-index=1', '--write-full-results-to', '/b/swarming/w/io7rdwgu/output.json'] in None (env: {'LOGNAME': 'chrome-bot', 'USER': 'chrome-bot', 'HOME': '/home/chrome-bot', 'BOTO_CONFIG': '/home/chrome-bot/.boto', 'PATH': '/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games', 'SWARMING_BOT_ID': 'build92-b4--device5', 'LANG': 'en_US.UTF-8', 'SHELL': '/bin/bash', 'SWARMING_SERVER': 'https://chromium-swarm.appspot.com', 'SHLVL': '2', 'CHROME_DEVEL_SANDBOX': '/opt/chromium/chrome_sandbox', 'SWARMING_HEADLESS': '1', 'TMPDIR': '/b/swarming/w/itQnxCBR', 'LUCI_CONTEXT': '/b/swarming/w/itQnxCBR/luci_ctx.UMOv3K.json', 'CHROMIUM_REV': 'e41aeaed051c8cc401e0bce2a6d57dcc330808e6', 'ADB_LIBUSB': '0', 'DEBIAN_FRONTEND': 'noninteractive', 'SWARMING_TASK_ID': '3a43b3d5375e2e11', 'NO_GCE_CHECK': 'False', 'CHROME_HEADLESS': '1', '_': '/usr/bin/python', 'GIT_USER_AGENT': 'git/2.7.4 linux2 build92-b4--device5', 'HOSTNAME': 'build92-b4--device5', 'PWD': '/b/swarming', 'SWARM_URL': 'https://chromium-swarm.appspot.com/bot_code', 'MAIL': '/var/mail/chrome-bot'})
Command ['/usr/bin/python', '../../tools/perf/run_tests', '-v', '--browser=android-chromium', '--device=android', '--total-shards=15', '--shard-index=1', '--write-full-results-to', '/b/swarming/w/io7rdwgu/output.json'] returned exit code 1