https://luci-logdog.appspot.com/v/?s=chrome%2Fbb%2Fchromium.perf%2FAndroid_Nexus6_Perf__2_%2F5121%2F%2B%2Frecipes%2Fsteps%2Fsystem_health.common_mobile.reference%2F0%2Fstdout


Builders failed on: 
- Android Nexus6 Perf (2): 
  https://build.chromium.org/p/chromium.perf/builders/Android%20Nexus6%20Perf%20%282%29
- Android Nexus7v2 Perf (2):
  https://build.chromium.org/p/chromium.perf/builders/Android%20Nexus7v2%20Perf%20%282%29


Traceback (most recent call last):
  RunBenchmark at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/telemetry/internal/story_runner.py:364
    benchmark.ShouldTearDownStateAfterEachStorySetRun())
  Run at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/telemetry/internal/story_runner.py:243
    _RunStoryAndProcessErrorIfNeeded(story, results, state, test)
  _RunStoryAndProcessErrorIfNeeded at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/telemetry/internal/story_runner.py:88
    state.RunStory(results)
  traced_function at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py:75
    return func(*args, **kwargs)
  RunStory at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/telemetry/page/shared_page_state.py:299
    self._current_page.Run(self)
  Run at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/telemetry/page/__init__.py:112
    self.RunPageInteractions(action_runner)
  RunPageInteractions at /b/c/b/Android_Nexus6_Perf__2_/src/tools/perf/page_sets/system_health/system_health_story.py:120
    action_runner.tab.WaitForDocumentReadyStateToBeComplete()
  traced_function at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py:75
    return func(*args, **kwargs)
  WaitForDocumentReadyStateToBeComplete at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/telemetry/internal/browser/web_contents.py:74
    'document.readyState == "complete"', timeout=timeout)
  traced_function at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py:75
    return func(*args, **kwargs)
  WaitForJavaScriptCondition2 at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/telemetry/internal/browser/web_contents.py:203
    return self.WaitForJavaScriptCondition(*args, **kwargs)
  traced_function at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py:75
    return func(*args, **kwargs)
  WaitForJavaScriptCondition at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/telemetry/internal/browser/web_contents.py:191
    return self._inspector_backend.WaitForJavaScriptCondition(*args, **kwargs)
  traced_function at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py:75
    return func(*args, **kwargs)
  WaitForJavaScriptCondition at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py:281
    return py_utils.WaitFor(IsJavaScriptExpressionTrue, timeout)
  WaitFor at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/common/py_utils/py_utils/__init__.py:120
    res = condition()
  IsJavaScriptExpressionTrue at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py:278
    return self._runtime.Evaluate(condition, context_id, timeout)
  Evaluate at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_runtime.py:45
    res = self._inspector_websocket.SyncRequest(request, timeout)
  SyncRequest at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_websocket.py:110
    res = self._Receive(timeout)
  _Receive at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_websocket.py:149
    data = self._socket.recv()
  recv at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py:293
    opcode, data = self.recv_data()
  recv_data at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py:310
    opcode, frame = self.recv_data_frame(control_frame)
  recv_data_frame at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py:323
    frame = self.recv_frame()
  recv_frame at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py:357
    return self.frame_buffer.recv_frame()
  recv_frame at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_abnf.py:336
    self.recv_header()
  recv_header at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_abnf.py:286
    header = self.recv_strict(2)
  recv_strict at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_abnf.py:371
    bytes_ = self.recv(min(16384, shortage))
  _recv at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py:427
    return recv(self.sock, bufsize)
  recv at /b/c/b/Android_Nexus6_Perf__2_/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_socket.py:93
    "Connection is already closed.")
WebSocketConnectionClosedException: Connection is already closed.