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Closed: Nov 2
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Webview nexus6 bot is failing a ton of tests

Project Member Reported by sheriff-...@appspot.gserviceaccount.com, Nov 2

Issue description

Filed by sheriff-o-matic@appspot.gserviceaccount.com on behalf of crouleau@google.com

blink_perf.image_decoder/decode-lossless-webp.html and 16 other(s) in performance_webview_test_suite failing on chromium.perf/Android Nexus6 WebView Perf

Builders failed on: 
- Android Nexus6 WebView Perf: 
  https://ci.chromium.org/p/chrome/builders/luci.chrome.ci/Android%20Nexus6%20WebView%20Perf

Traceback (most recent call last):
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/story_runner.py", line 126, in _RunStoryAndProcessErrorIfNeeded
    state.RunStory(results)
  File "/b/swarming/w/ir/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 "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/page/shared_page_state.py", line 302, in RunStory
    self._current_page, self._current_tab, results)
  File "/b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
    return func(*args, **kwargs)
  File "/b/swarming/w/ir/tools/perf/benchmarks/blink_perf.py", line 318, in ValidateAndMeasurePage
    renderer_thread = model.GetFirstRendererThread(tab.id)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/timeline/model.py", line 239, in GetFirstRendererThread
    markers = self.FindTimelineMarkers('first-renderer-thread')
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/timeline/model.py", line 212, in FindTimelineMarkers
    raise MarkerMismatchError()


 
Here are all the failures:

Unexpected Failures:
* blink_perf.image_decoder/decode-lossless-webp.html
* blink_perf.paint/color-changes.html
* blink_perf.paint/large-table-background-change-with-visible-collapsed-borders.html
* blink_perf.paint/large-table-collapsed-border-change-with-backgrounds.html
* blink_perf.paint/large-table-collapsed-border-change-with-text.html
* blink_perf.paint/transform-changes.html
* memory.long_running_idle_gmail_tbmv2/https://mail.google.com/mail/
* rendering.mobile/canvas_90000_pixels_per_second_desktop_gpu_raster
* rendering.mobile/microsoft_fireflies
* speedometer2/Speedometer2
* v8.browsing_mobile-future/browse:news:toi
* v8.browsing_mobile/browse:news:toi
* webrtc/pause_play_peerconnections
 
Unexpected Flakes:
* memory.top_10_mobile/after_http_en_m_wikipedia_org_wiki_Science
* memory.top_10_mobile/after_http_search_yahoo_com_search__ylt_p_google
* memory.top_10_mobile/after_https_m_facebook_com_rihanna
* memory.top_10_mobile/after_https_mobile_twitter_com_justinbieber_skip_interstitial_true
 
Unexpected Skips:
* blink_perf.image_decoder/decode-lossy-webp.html
* blink_perf.image_decoder/decode-png-palette-opaque.html
* blink_perf.image_decoder/decode-png-palette.html
* blink_perf.image_decoder/decode-png.html
 

I will attempt to figure out which ones share the same stack trace.
Above are the failures from build https://ci.chromium.org/p/chrome/builders/luci.chrome.ci/Android%20Nexus6%20WebView%20Perf/3109

below are failures from the build right before it.

Unexpected Failures:
* blink_perf.bindings/structured-clone-long-string-serialize.html
* blink_perf.paint/large-table-background-change-with-visible-collapsed-borders.html
* blink_perf.paint/large-table-collapsed-border-change-with-backgrounds.html
* blink_perf.paint/large-table-collapsed-border-change-with-text.html
* memory.long_running_idle_gmail_tbmv2/https://mail.google.com/mail/
* rendering.mobile/microsoft_fireflies
* system_health.common_mobile/background:media:imgur
* system_health.common_mobile/browse:tech:discourse_infinite_scroll:2018
* v8.browsing_mobile-future/browse:news:toi
* v8.browsing_mobile/browse:media:flickr_infinite_scroll
* v8.browsing_mobile/browse:news:toi
 
Unexpected Flakes:
* memory.top_10_mobile/after_http_m_youtube_com_results_q_science
* memory.top_10_mobile/after_https_m_facebook_com_rihanna
* memory.top_10_mobile/after_https_www_google_co_uk_hl_en_q_science
* wasm/WasmSpaceBuggy



Therefore the shared failures are:

Unexpected failures:
blink_perf.paint/large-table-background-change-with-visible-collapsed-borders.html
blink_perf.paint/large-table-collapsed-border-change-with-backgrounds.html
blink_perf.paint/large-table-collapsed-border-change-with-text.html
memory.long_running_idle_gmail_tbmv2/https://mail.google.com/mail/
rendering.mobile/microsoft_fireflies
v8.browsing_mobile-future/browse:news:toi
v8.browsing_mobile/browse:news:toi	

Unexpected flakes:
memory.top_10_mobile/after_https_m_facebook_com_rihanna


I will try to group these by errors.
Errors:

1.
# Affected Tests:
blink_perf.paint/large-table-background-change-with-visible-collapsed-borders.html
blink_perf.paint/large-table-collapsed-border-change-with-backgrounds.html
blink_perf.paint/large-table-collapsed-border-change-with-text.html


# Error:
Traceback (most recent call last):
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/story_runner.py", line 126, in _RunStoryAndProcessErrorIfNeeded
    state.RunStory(results)
  File "/b/swarming/w/ir/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 "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/page/shared_page_state.py", line 302, in RunStory
    self._current_page, self._current_tab, results)
  File "/b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
    return func(*args, **kwargs)
  File "/b/swarming/w/ir/tools/perf/benchmarks/blink_perf.py", line 304, in ValidateAndMeasurePage
    trace_data = tab.browser.platform.tracing_controller.StopTracing()[0]
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/core/tracing_controller.py", line 53, in StopTracing
    return self._tracing_controller_backend.StopTracing()
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/platform/tracing_controller_backend.py", line 157, in StopTracing
    '\n'.join(raised_exception_messages))
TracingException: Exceptions raised when trying to stop tracing:
Traceback (most recent call last):
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/platform/tracing_controller_backend.py", line 145, in StopTracing
    agent.CollectAgentTraceData(builder)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/platform/tracing_agent/chrome_tracing_agent.py", line 248, in CollectAgentTraceData
    '\n'.join(raised_exception_messages))
ChromeTracingStoppedError: Exceptions raised when trying to collect Chrome devtool tracing:
Error when collecting Chrome tracing on devtools at port localabstract:webview_devtools_remote_4902:
Traceback (most recent call last):
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/platform/tracing_agent/chrome_tracing_agent.py", line 237, in CollectAgentTraceData
    client.CollectChromeTracingData(trace_data_builder)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/devtools_client_backend.py", line 489, in CollectChromeTracingData
    self._tracing_backend.CollectTraceData(trace_data_builder, timeout)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/tracing_backend.py", line 237, in CollectTraceData
    self._CollectTracingData(trace_data_builder, timeout)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/tracing_backend.py", line 279, in _CollectTracingData
    'the timeout amount.' % elapsed_time)
TracingTimeoutException: Only received partial trace data due to timeout after 120.070789814 seconds. If the trace data is big, you may want to increase the timeout amount.




2.
# Affected Tests
memory.long_running_idle_gmail_tbmv2/https://mail.google.com/mail/

# Error:
Traceback (most recent call last):
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/story_runner.py", line 128, in _RunStoryAndProcessErrorIfNeeded
    test.Measure(state.platform, results)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/web_perf/timeline_based_measurement.py", line 268, in Measure
    trace_result, _ = platform.tracing_controller.StopTracing()
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/core/tracing_controller.py", line 53, in StopTracing
    return self._tracing_controller_backend.StopTracing()
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/platform/tracing_controller_backend.py", line 157, in StopTracing
    '\n'.join(raised_exception_messages))
TracingException: Exceptions raised when trying to stop tracing:
Traceback (most recent call last):
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/platform/tracing_controller_backend.py", line 145, in StopTracing
    agent.CollectAgentTraceData(builder)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/platform/tracing_agent/chrome_tracing_agent.py", line 248, in CollectAgentTraceData
    '\n'.join(raised_exception_messages))
ChromeTracingStoppedError: Exceptions raised when trying to collect Chrome devtool tracing:
Error when collecting Chrome tracing on devtools at port localabstract:webview_devtools_remote_5248:
Traceback (most recent call last):
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/platform/tracing_agent/chrome_tracing_agent.py", line 237, in CollectAgentTraceData
    client.CollectChromeTracingData(trace_data_builder)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/devtools_client_backend.py", line 489, in CollectChromeTracingData
    self._tracing_backend.CollectTraceData(trace_data_builder, timeout)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/tracing_backend.py", line 237, in CollectTraceData
    self._CollectTracingData(trace_data_builder, timeout)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/tracing_backend.py", line 265, in _CollectTracingData
    traceback.format_exc())
TracingUnrecoverableException: Exception raised while collecting tracing data:
Traceback (most recent call last):
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/tracing_backend.py", line 258, in _CollectTracingData
    self._inspector_websocket.DispatchNotifications(timeout)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_websocket.py", line 156, in DispatchNotifications
    self._Receive(timeout)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_websocket.py", line 181, in _Receive
    raise WebSocketException(err)
WebSocketException: WebSocketException of type <class 'websocket._exceptions.WebSocketConnectionClosedException'>. Error message: Connection is already closed.


3. 
# Affected Tests
rendering.mobile/microsoft_fireflies

# Error
(ERROR) 2018-11-02 18:17:41,895 story_runner.ProcessError:100  Handleable error
Traceback (most recent call last):
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/story_runner.py", line 126, in _RunStoryAndProcessErrorIfNeeded
    state.RunStory(results)
  File "/b/swarming/w/ir/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 "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/page/shared_page_state.py", line 300, in RunStory
    self._current_page.Run(self)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/page/__init__.py", line 95, in Run
    shared_state.page_test.RunNavigateSteps(self, current_tab)
  File "/b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
    return func(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/page/legacy_page_test.py", line 152, in RunNavigateSteps
    page.RunNavigateSteps(action_runner)
  File "/b/swarming/w/ir/tools/perf/page_sets/rendering/tough_canvas_cases.py", line 28, in RunNavigateSteps
    "document.readyState == 'complete'")
  File "/b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
    return func(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/actions/action_runner.py", line 261, in WaitForJavaScriptCondition
    return self._tab.WaitForJavaScriptCondition(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
    return func(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/browser/web_contents.py", line 245, in WaitForJavaScriptCondition
    return self._inspector_backend.WaitForJavaScriptCondition(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
    return func(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py", line 300, in WaitForJavaScriptCondition
    return py_utils.WaitFor(IsJavaScriptExpressionTrue, timeout)
  File "/b/swarming/w/ir/third_party/catapult/common/py_utils/py_utils/__init__.py", line 131, in WaitFor
    res = condition()
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py", line 297, in IsJavaScriptExpressionTrue
    return self._EvaluateJavaScript(condition, context_id, timeout)
  File "/b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
    return func(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py", line 41, in Inner
    inspector_backend._ConvertExceptionFromInspectorWebsocket(e)
  File "/b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
    return func(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py", line 38, in Inner
    return func(inspector_backend, *args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py", line 552, in _EvaluateJavaScript
    self._runtime.Crash(context_id, timeout)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_runtime.py", line 82, in Crash
    res = self._inspector_websocket.SyncRequest(request, timeout)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_websocket.py", line 129, in SyncRequest
    self._SendRequest(req)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_websocket.py", line 119, in _SendRequest
    raise WebSocketException(err)

	11-02 18:17:30.620   898   898 W InputMethodManagerService: android.os.DeadObjectException
	11-02 18:17:30.620   898   898 W InputMethodManagerService: 	at android.os.BinderProxy.transactNative(Native Method)
	11-02 18:17:30.620   898   898 W InputMethodManagerService: 	at android.os.BinderProxy.transact(Binder.java:503)
	11-02 18:17:30.620   898   898 W InputMethodManagerService: 	at com.android.internal.view.IInputMethodSession$Stub$Proxy.finishSession(IInputMethodSession.java:305)
	11-02 18:17:30.620   898   898 W InputMethodManagerService: 	at com.android.server.InputMethodManagerService.finishSessionLocked(InputMethodManagerService.java:1599)
	11-02 18:17:30.620   898   898 W InputMethodManagerService: 	at com.android.server.InputMethodManagerService.clearClientSessionLocked(InputMethodManagerService.java:1590)
	11-02 18:17:30.620   898   898 W InputMethodManagerService: 	at com.android.server.InputMethodManagerService.clearCurMethodLocked(InputMethodManagerService.java:1616)
	11-02 18:17:30.620   898   898 W InputMethodManagerService: 	at com.android.server.InputMethodManagerService.onServiceDisconnected(InputMethodManagerService.java:1635)
	11-02 18:17:30.620   898   898 W InputMethodManagerService: 	at android.app.LoadedApk$ServiceDispatcher.doDeath(LoadedApk.java:1228)
	11-02 18:17:30.620   898   898 W InputMethodManagerService: 	at android.app.LoadedApk$ServiceDispatcher$RunConnection.run(LoadedApk.java:1242)
	11-02 18:17:30.620   898   898 W InputMethodManagerService: 	at android.os.Handler.handleCallback(Handler.java:739)
	11-02 18:17:30.620   898   898 W InputMethodManagerService: 	at android.os.Handler.dispatchMessage(Handler.java:95)
	11-02 18:17:30.620   898   898 W InputMethodManagerService: 	at android.os.Looper.loop(Looper.java:148)
	11-02 18:17:30.620   898   898 W InputMethodManagerService: 	at com.android.server.SystemServer.run(SystemServer.java:283)
	11-02 18:17:30.620   898   898 W InputMethodManagerService: 	at com.android.server.SystemServer.main(SystemServer.java:168)
	11-02 18:17:30.620   898   898 W InputMethodManagerService: 	at java.lang.reflect.Method.invoke(Native Method)
	11-02 18:17:30.620   898   898 W InputMethodManagerService: 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
	11-02 18:17:30.620   898   898 W InputMethodManagerService: 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)


4. 
# Affected Tests
v8.browsing_mobile-future/browse:news:toi

# Error
Traceback (most recent call last):
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/story_runner.py", line 128, in _RunStoryAndProcessErrorIfNeeded
    test.Measure(state.platform, results)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/web_perf/timeline_based_measurement.py", line 268, in Measure
    trace_result, _ = platform.tracing_controller.StopTracing()
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/core/tracing_controller.py", line 53, in StopTracing
    return self._tracing_controller_backend.StopTracing()
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/platform/tracing_controller_backend.py", line 157, in StopTracing
    '\n'.join(raised_exception_messages))
TracingException: Exceptions raised when trying to stop tracing:
Traceback (most recent call last):
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/platform/tracing_controller_backend.py", line 145, in StopTracing
    agent.CollectAgentTraceData(builder)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/platform/tracing_agent/chrome_tracing_agent.py", line 248, in CollectAgentTraceData
    '\n'.join(raised_exception_messages))
ChromeTracingStoppedError: Exceptions raised when trying to collect Chrome devtool tracing:
Error when collecting Chrome tracing on devtools at port localabstract:webview_devtools_remote_10643:
Traceback (most recent call last):
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/platform/tracing_agent/chrome_tracing_agent.py", line 237, in CollectAgentTraceData
    client.CollectChromeTracingData(trace_data_builder)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/devtools_client_backend.py", line 489, in CollectChromeTracingData
    self._tracing_backend.CollectTraceData(trace_data_builder, timeout)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/tracing_backend.py", line 237, in CollectTraceData
    self._CollectTracingData(trace_data_builder, timeout)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/tracing_backend.py", line 265, in _CollectTracingData
    traceback.format_exc())
TracingUnrecoverableException: Exception raised while collecting tracing data:
Traceback (most recent call last):
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/tracing_backend.py", line 258, in _CollectTracingData
    self._inspector_websocket.DispatchNotifications(timeout)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_websocket.py", line 156, in DispatchNotifications
    self._Receive(timeout)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_websocket.py", line 181, in _Receive
    raise WebSocketException(err)
WebSocketException: WebSocketException of type <class 'websocket._exceptions.WebSocketConnectionClosedException'>. Error message: Connection is already closed.


5. 
# Affected Tests
memory.top_10_mobile/after_https_m_facebook_com_rihanna@{'phase': 'background'}


# Error
  Traceback (most recent call last):
    File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/story_runner.py", line 126, in _RunStoryAndProcessErrorIfNeeded
      state.RunStory(results)
    File "/b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
      return func(*args, **kwargs)
    File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/page/shared_page_state.py", line 300, in RunStory
      self._current_page.Run(self)
    File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/page/__init__.py", line 99, in Run
      self.RunPageInteractions(action_runner)
    File "/b/swarming/w/ir/tools/perf/page_sets/memory_top_10_mobile.py", line 62, in RunPageInteractions
      action_runner.MeasureMemory(self.story_set.DETERMINISTIC_MODE)
    File "/b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
      return func(*args, **kwargs)
    File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/actions/action_runner.py", line 162, in MeasureMemory
      raise exceptions.StoryActionError('Unable to obtain memory dump')

  Traceback (most recent call last):
    _RunStoryAndProcessErrorIfNeeded at /b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/story_runner.py:153
      test.DidRunStory(state.platform, results)
    DidRunStory at /b/swarming/w/ir/third_party/catapult/telemetry/telemetry/web_perf/timeline_based_measurement.py:296
      trace_result, _ = platform.tracing_controller.StopTracing()
    StopTracing at /b/swarming/w/ir/third_party/catapult/telemetry/telemetry/core/tracing_controller.py:53
      return self._tracing_controller_backend.StopTracing()
    StopTracing at /b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/platform/tracing_controller_backend.py:157
      '\n'.join(raised_exception_messages))
  TracingException: Exceptions raised when trying to stop tracing:
  Traceback (most recent call last):
    File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/platform/tracing_controller_backend.py", line 145, in StopTracing
      agent.CollectAgentTraceData(builder)
    File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/platform/tracing_agent/chrome_tracing_agent.py", line 248, in CollectAgentTraceData
      '\n'.join(raised_exception_messages))
  ChromeTracingStoppedError: Exceptions raised when trying to collect Chrome devtool tracing:
  Error when collecting Chrome tracing on devtools at port localabstract:webview_devtools_remote_27660:
  Traceback (most recent call last):
    File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/platform/tracing_agent/chrome_tracing_agent.py", line 237, in CollectAgentTraceData
      client.CollectChromeTracingData(trace_data_builder)
    File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/devtools_client_backend.py", line 489, in CollectChromeTracingData
      self._tracing_backend.CollectTraceData(trace_data_builder, timeout)
    File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/tracing_backend.py", line 237, in CollectTraceData
      self._CollectTracingData(trace_data_builder, timeout)
    File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/tracing_backend.py", line 279, in _CollectTracingData
      'the timeout amount.' % elapsed_time)
  TracingTimeoutException: Only received partial trace data due to timeout after 120.098782063 seconds. If the trace data is big, you may want to increase the timeout amount.
Blockedon: 901493
Owner: crouleau@chromium.org
Status: Assigned (was: Available)
Summary: Webview nexus6 bot is failing a ton of tests (was: blink_perf.image_decoder/decode-lossless-webp.html and 16 other(s) in performance_webview_test_suite failing on chromium.perf/Android Nexus6 WebView Perf)
Blockedon: -901493
Disabled tests for 1:  issue 901493  and  2 : issue 901510
Disabled tests for 3: issue 901526
Disabled tests for 4: issue 901534
5 is just flaky, so I didn't disable the test. I just filed  issue 901553 .
Status: Fixed (was: Assigned)

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