Failed bots:
https://uberchromegw.corp.google.com/i/internal.client.clank/builders/health-plan-webview-low-end-phone
https://uberchromegw.corp.google.com/i/internal.client.clank/builders/health-plan-webview-phone

Logs:
INFO:root:Try printing formatted exception: None None None

Traceback (most recent call last):
  RunBenchmark at /b/build/slave/health-plan-webview-low-end-phone/build/src/third_party/catapult/telemetry/telemetry/internal/story_runner.py:336
    benchmark.ShouldTearDownStateAfterEachStorySetRun())
  Run at /b/build/slave/health-plan-webview-low-end-phone/build/src/third_party/catapult/telemetry/telemetry/internal/story_runner.py:227
    _RunStoryAndProcessErrorIfNeeded(story, results, state, test)
  _RunStoryAndProcessErrorIfNeeded at /b/build/slave/health-plan-webview-low-end-phone/build/src/third_party/catapult/telemetry/telemetry/internal/story_runner.py:78
    test.WillRunStory(state.platform)
  WillRunStory at /b/build/slave/health-plan-webview-low-end-phone/build/src/third_party/catapult/telemetry/telemetry/web_perf/timeline_based_measurement.py:282
    platform.tracing_controller.StartTracing(self._tbm_options.config)
  StartTracing at /b/build/slave/health-plan-webview-low-end-phone/build/src/third_party/catapult/telemetry/telemetry/core/tracing_controller.py:43
    self._tracing_controller_backend.StartTracing(tracing_config, timeout)
  StartTracing at /b/build/slave/health-plan-webview-low-end-phone/build/src/third_party/catapult/telemetry/telemetry/internal/platform/tracing_controller_backend.py:91
    if agent.StartAgentTracing(config, timeout):
  StartAgentTracing at /b/build/slave/health-plan-webview-low-end-phone/build/src/third_party/catapult/telemetry/telemetry/internal/platform/tracing_agent/atrace_tracing_agent.py:38
    return self._atrace_agent.StartAgentTracing(self._config, timeout)
  RunWithTimeout at /b/build/slave/health-plan-webview-low-end-phone/build/src/third_party/catapult/common/py_utils/py_utils/__init__.py:83
    return timeout_retry.Run(func, timeout, 0, args=args)
  Run at /b/build/slave/health-plan-webview-low-end-phone/build/src/third_party/catapult/devil/devil/utils/timeout_retry.py:159
    error_log_func=error_log_func)
  JoinAll at /b/build/slave/health-plan-webview-low-end-phone/build/src/third_party/catapult/devil/devil/utils/reraiser_thread.py:186
    self._JoinAll(watcher, timeout)
  _JoinAll at /b/build/slave/health-plan-webview-low-end-phone/build/src/third_party/catapult/devil/devil/utils/reraiser_thread.py:158
    thread.ReraiseIfException()
  run at /b/build/slave/health-plan-webview-low-end-phone/build/src/third_party/catapult/devil/devil/utils/reraiser_thread.py:81
    self._ret = self._func(*self._args, **self._kwargs)
  <lambda> at /b/build/slave/health-plan-webview-low-end-phone/build/src/third_party/catapult/devil/devil/utils/timeout_retry.py:152
    child_thread = reraiser_thread.ReraiserThread(lambda: func(*args, **kwargs),
  StartAgentTracing at /b/build/slave/health-plan-webview-low-end-phone/build/src/third_party/catapult/systrace/systrace/tracing_agents/atrace_agent.py:161
    assert config.atrace_categories, 'Atrace categories are missing!'
AssertionError: Atrace categories are missing!


Suspected CL:

commit	f7d080135d034437b8ce00208db09b28796490f3	[log] [tgz]
author	zhenw <zhenw@chromium.org>	Thu Oct 06 20:14:18 2016
committer	Commit bot <commit-bot@chromium.org>	Thu Oct 06 20:14:18 2016
tree	38675d56fe225f7f9c743f0669b1fecedc429a98
parent	a2738b13731a30e8ced3a35c1b699b86fda3a344 [diff]
Update systrace and profile_chrome's default agent behavior

Systrace needs to have atrace as the default agent.
profile_chrome needs to have Chrome tracing as the default agent.

BUG=catapult:#2912,catapult:#2781

Review-Url: https://codereview.chromium.org/2391383004