Log:
(ERROR) 2018-08-31 06:17:32,701 page_test_results.Fail:540  Failure recorded: TypeError: Cannot read property 'duration' of undefined
    at generateBreakdownForCompositorPipelineInService_ (/tracing/metrics/rendering/pipeline.html:56:37)
    at Object.addPipelineHistograms (/tracing/metrics/rendering/pipeline.html:176:23)
    at RegisteredTypeInfo.renderingMetric [as constructor] (/tracing/metrics/rendering/rendering_metric.html:87:26)
    at runMetrics (/b/s/w/ir/third_party/catapult/tracing/tracing/metrics/metric_map_function.html:61:16)
    at metricMapFunction (/b/s/w/ir/third_party/catapult/tracing/tracing/metrics/metric_map_function.html:190:24)
    at Object.mapSingleTrace (/tracing/mre/map_single_trace.html:39:7)
    at eval (/b/s/w/ir/third_party/catapult/tracing/tracing/mre/map_single_trace_cmdline.html:61:18)
    at Object.runAndConvertErrorsToFailures (/tracing/mre/map_single_trace.html:24:10)
    at mapSingleTraceWithResult (/b/s/w/ir/third_party/catapult/tracing/tracing/mre/map_single_trace_cmdline.html:52:12)
    at Object.mapSingleTraceMain (/b/s/w/ir/third_party/catapult/tracing/tracing/mre/map_single_trace_cmdline.html:77:20)
(INFO) 2018-08-31 06:17:32,890 browser.Close:208  Closing browser (pid=4591) ...
(WARNING) 2018-08-31 06:17:38,778 desktop_browser_backend.Close:574  Failed to gracefully shutdown.
(WARNING) 2018-08-31 06:17:38,779 desktop_browser_backend.Close:578  Proceed to kill the browser.
(INFO) 2018-08-31 06:17:38,782 browser.Close:221  Browser is closed.
[  FAILED  ] rendering.desktop/twitch_pinch_2018 (39476 ms)
[ RUN      ] rendering.desktop/twitter_2018

https://chrome-swarming.appspot.com/task?id=3fa8db16c90ccd10&refresh=10&show_raw=1

FLakiness dashboard:https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=performance_test_suite&tests=rendering.desktop%2Ftwitch_pinch_2018


Sadrul: can you look at this?