The bluetooth_TurnOnOffUI test fails with the following reason :

"Unhandled LoginException: Timed out going through login screen. Cryptohome not mounted. OOBE not dismissed."

log Trace:

08/25 12:36:40.435 ERROR|           browser:0054| Failed with LoginException while starting the browser backend.
08/25 12:36:44.688 ERROR|            chrome:0192| Timed out logging in, tries=0, error=LoginException('Timed out going through login screen. Cryptohome not mounted. OOBE not dismissed.',)
08/25 12:52:02.712 ERROR|           browser:0054| Failed with LoginException while starting the browser backend.
08/25 12:52:06.465 ERROR|            chrome:0192| Timed out logging in, tries=1, error=LoginException('Timed out going through login screen. Cryptohome not mounted. OOBE not dismissed.',)
08/25 13:07:22.728 ERROR|           browser:0054| Failed with LoginException while starting the browser backend.
08/25 13:07:25.775 ERROR|            chrome:0192| Timed out logging in, tries=2, error=LoginException('Timed out going through login screen. Cryptohome not mounted. OOBE not dismissed.',)
08/25 13:07:25.969 WARNI|              test:0606| The test failed with the following exception
Traceback (most recent call last):
  File "/usr/local/autotest/common_lib/test.py", line 600, in _exec
    _call_test_function(self.execute, *p_args, **p_dargs)
  File "/usr/local/autotest/common_lib/test.py", line 806, in _call_test_function
    raise error.UnhandledTestFail(e)
UnhandledTestFail: Unhandled LoginException: Timed out going through login screen. Cryptohome not mounted. OOBE not dismissed.
Traceback (most recent call last):
  File "/usr/local/autotest/common_lib/test.py", line 800, in _call_test_function
    return func(*args, **dargs)
  File "/usr/local/autotest/common_lib/test.py", line 464, in execute
    postprocess_profiled_run, args, dargs)
  File "/usr/local/autotest/common_lib/test.py", line 371, in _call_run_once
    self.run_once(*args, **dargs)
  File "/usr/local/autotest/tests/bluetooth_TurnOnOffUI/bluetooth_TurnOnOffUI.py", line 134, in run_once
    with chromedriver.chromedriver() as chromedriver_instance:
  File "/usr/local/autotest/common_lib/cros/chromedriver.py", line 69, in __init__
    dont_override_profile=dont_override_profile
  File "/usr/local/autotest/common_lib/cros/chrome.py", line 179, in __init__
    self._browser = self._browser_to_create.Create()
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome/cros_browser_finder.py", line 103, in Create
    browser_backend, self._platform_backend, startup_args)
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome/cros_browser_with_oobe.py", line 14, in __init__
    backend, platform_backend, startup_args)
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/browser/browser.py", line 48, in __init__
    self._browser_backend.Start(startup_args, startup_url=startup_url)
  File "/usr/local/telemetry/src/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 52, in traced_function
    return func(*args, **kwargs)
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome/cros_browser_backend.py", line 110, in Start
    + self._GetLoginStatus())
  File "/usr/local/telemetry/src/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 52, in traced_function
    return func(*args, **kwargs)
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome/cros_browser_backend.py", line 224, in _RaiseOnLoginFailure
    raise exceptions.LoginException(error)
LoginException: Timed out going through login screen. Cryptohome not mounted. OOBE not dismissed.

08/25 13:07:28.030 ERROR|    graphics_utils:0519| Command <screenshot "/usr/local/autotest/results/default/bluetooth_TurnOnOffUI.UI/debug/chrome-0.png"> failed, rc=1, Command returned non-zero exit status
* Command: 
    screenshot "/usr/local/autotest/results/default/bluetooth_TurnOnOffUI.UI/
    debug/chrome-0.png"
Exit status: 1
Duration: 0.0469160079956

stderr:
[0825/130728:ERROR:main.cc(100)] CRTC not found. Is the screen on?

Failure Link:

https://stainless.corp.google.com/search?exclude_retried=true&first_date=2018-08-17&master_builder_name=&builder_name_number=&shard=&exclude_acts=true&builder_name=&master_builder_name_number=&owner=&retry=&exclude_cts=true&exclude_non_production=false&hostname=&board=&test=%5Ebluetooth_TurnOnOffUI%24&suite=bluetooth_qualification%7Cbluetooth_chameleon%7Cbluetooth_sanity%7Cbluetooth_stress&build=%5ER70%5C-11003%5C.0%5C.0%24&status=FAIL&status=ERROR&status=ABORT&reason=&waterfall=&exclude_not_run=false&last_date=2018-08-27&exclude_non_release=true&exclude_au=true&model=&view=list