Builder status page: 
https://uberchromegw.corp.google.com/i/chromium.perf/builders/Android%20One%20Perf%20%281%29?numbuilds=200

Most recent failure: https://uberchromegw.corp.google.com/i/chromium.perf/builders/Android%20One%20Perf%20%281%29/builds/4199

Link to failing step log:

https://uberchromegw.corp.google.com/i/chromium.perf/builders/Android%20One%20Perf%20%281%29/builds/4199/steps/dromaeo.jslibeventprototype/logs/stdio


INFO:root:*************** BROWSER STANDARD OUTPUT ***************
INFO:root:Cannot get standard output on Android
INFO:root:*********** END OF BROWSER STANDARD OUTPUT ************
INFO:root:********************* BROWSER LOG *********************
INFO:root:No log file
INFO:root:***************** END OF BROWSER LOG ******************
INFO:devil.utils.cmd_helper:[host]> /b/rr/tmpDqVNyJ/w/src/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s AG86044222G0GGC shell '( /system/bin/screencap -p /data/local/tmp/temp_file-7d92a1e690286.png );echo %$?'
INFO:devil.utils.cmd_helper:[host]> /b/rr/tmpDqVNyJ/w/src/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s AG86044222G0GGC pull /data/local/tmp/temp_file-7d92a1e690286.png /tmp/tmpkwJeEs.png
INFO:devil.utils.cmd_helper:[host]> /b/rr/tmpDqVNyJ/w/src/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s AG86044222G0GGC shell 'rm -f /data/local/tmp/temp_file-7d92a1e690286.png'
Traceback (most recent call last):
  File "/b/rr/tmpDqVNyJ/w/src/third_party/catapult/telemetry/telemetry/internal/story_runner.py", line 86, in _RunStoryAndProcessErrorIfNeeded
    state.RunStory(results)
  File "/b/rr/tmpDqVNyJ/w/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 "/b/rr/tmpDqVNyJ/w/src/third_party/catapult/telemetry/telemetry/page/shared_page_state.py", line 310, in RunStory
    self._current_page.Run(self)
  File "/b/rr/tmpDqVNyJ/w/src/third_party/catapult/telemetry/telemetry/page/__init__.py", line 106, in Run
    shared_state.page_test.DidNavigateToPage(self, current_tab)
  File "/b/rr/tmpDqVNyJ/w/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 "/b/rr/tmpDqVNyJ/w/src/tools/perf/benchmarks/dromaeo.py", line 32, in DidNavigateToPage
    self._power_metric.Start(page, tab)
  File "/b/rr/tmpDqVNyJ/w/src/tools/perf/metrics/power.py", line 89, in Start
    self._starting_cpu_stats = self._browser.cpu_stats
  File "/b/rr/tmpDqVNyJ/w/src/third_party/catapult/telemetry/telemetry/internal/browser/browser.py", line 240, in cpu_stats
    result = self._GetStatsCommon(self._platform_backend.GetCpuStats)
  File "/b/rr/tmpDqVNyJ/w/src/third_party/catapult/telemetry/telemetry/internal/browser/browser.py", line 139, in _GetStatsCommon
    browser_pid = self._browser_backend.pid
  File "/b/rr/tmpDqVNyJ/w/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome/android_browser_backend.py", line 200, in pid
    '%s' % (self._backend_settings.package, pids))
Exception: At most one instance of process org.chromium.chrome expected but found pids: defaultdict(<type 'list'>, {'org.chromium.chrome:sandboxed_process0': ['18964'], 'org.chromium.chrome': ['18934', '19008']})

[  FAILED  ] http://dromaeo.com?jslib-event-prototype (11401 ms)
INFO:devil.utils.cmd_helper:[host]> /b/rr/tmpDqVNyJ/w/src/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s AG86044222G0GGC shell '( ps | grep -F org.chromium.chrome; echo "PIPESTATUS: ${PIPESTATUS[@]}" );echo %$?'
INFO:devil.utils.cmd_helper:[host]> /b/rr/tmpDqVNyJ/w/src/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s AG86044222G0GGC shell '( ls /root );echo %$?'
INFO:devil.utils.cmd_helper:[host]> /b/rr/tmpDqVNyJ/w/src/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s AG86044222G0GGC shell '( cd /sys/devices/system/cpu && for CPU in cpu0 cpu1 cpu2 cpu3; do test -e "$CPU/cpufreq/scaling_governor" && echo ondemand > "$CPU/cpufreq/scaling_governor"; echo -n "%~%$?%~%"; done );echo %$?'
WARNING:devil.android.perf.perf_control:Failed to set cpufreq/scaling_governor to 'ondemand' on any cpus
INFO:devil.utils.cmd_helper:[host]> /b/rr/tmpDqVNyJ/w/src/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s AG86044222G0GGC shell '( cd /sys/devices/system/cpu && for CPU in cpu0 cpu1 cpu2 cpu3; do cat "$CPU/online"; echo -n "%~%$?%~%"; done );echo %$?'
WARNING:devil.android.perf.perf_control:Unexpected cpu hot plugging detected.
INFO:devil.utils.cmd_helper:[host]> /b/rr/tmpDqVNyJ/w/src/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s AG86044222G0GGC shell '( p=org.chromium.chrome;if [[ "$(ps)" = *$p* ]]; then am force-stop $p; fi );echo %$?'
INFO:devil.utils.cmd_helper:[host]> /b/rr/tmpDqVNyJ/w/src/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s AG86044222G0GGC forward --list
WARNING:root:Port 54381 not found in adb forward --list for device AG86044222G0GGC
INFO:py_utils.cloud_storage:Try to lock /b/rr/tmpDqVNyJ/w/src/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb
INFO:py_utils.cloud_storage:Global file lock acquired, try to create pseudo_lock_path: /b/rr/tmpDqVNyJ/w/src/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb.pseudo_lock
INFO:py_utils.cloud_storage:Try to remove pseudo_lock_path: /b/rr/tmpDqVNyJ/w/src/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb.pseudo_lock
INFO:py_utils.cloud_storage:Done locking /b/rr/tmpDqVNyJ/w/src/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb
INFO:devil.utils.cmd_helper:[host]> /b/rr/tmpDqVNyJ/w/src/third_party/catapult/devil/bin/deps/linux2/x86_64/forwarder_host --adb=/b/rr/tmpDqVNyJ/w/src/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb --serial-id=AG86044222G0GGC --unmap 47018
INFO:root:Try printing formatted exception: None None None

Traceback (most recent call last):
  RunBenchmark at /b/rr/tmpDqVNyJ/w/src/third_party/catapult/telemetry/telemetry/internal/story_runner.py:341
    benchmark.ShouldTearDownStateAfterEachStorySetRun())
  Run at /b/rr/tmpDqVNyJ/w/src/third_party/catapult/telemetry/telemetry/internal/story_runner.py:227
    _RunStoryAndProcessErrorIfNeeded(story, results, state, test)
  _RunStoryAndProcessErrorIfNeeded at /b/rr/tmpDqVNyJ/w/src/third_party/catapult/telemetry/telemetry/internal/story_runner.py:86
    state.RunStory(results)
  traced_function at /b/rr/tmpDqVNyJ/w/src/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py:52
    return func(*args, **kwargs)
  RunStory at /b/rr/tmpDqVNyJ/w/src/third_party/catapult/telemetry/telemetry/page/shared_page_state.py:310
    self._current_page.Run(self)
  Run at /b/rr/tmpDqVNyJ/w/src/third_party/catapult/telemetry/telemetry/page/__init__.py:106
    shared_state.page_test.DidNavigateToPage(self, current_tab)
  traced_function at /b/rr/tmpDqVNyJ/w/src/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py:52
    return func(*args, **kwargs)
  DidNavigateToPage at /b/rr/tmpDqVNyJ/w/src/tools/perf/benchmarks/dromaeo.py:32
    self._power_metric.Start(page, tab)
  Start at /b/rr/tmpDqVNyJ/w/src/tools/perf/metrics/power.py:89
    self._starting_cpu_stats = self._browser.cpu_stats
  cpu_stats at /b/rr/tmpDqVNyJ/w/src/third_party/catapult/telemetry/telemetry/internal/browser/browser.py:240
    result = self._GetStatsCommon(self._platform_backend.GetCpuStats)
  _GetStatsCommon at /b/rr/tmpDqVNyJ/w/src/third_party/catapult/telemetry/telemetry/internal/browser/browser.py:139
    browser_pid = self._browser_backend.pid
  pid at /b/rr/tmpDqVNyJ/w/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome/android_browser_backend.py:200
    '%s' % (self._backend_settings.package, pids))
Exception: At most one instance of process org.chromium.chrome expected but found pids: defaultdict(<type 'list'>, {'org.chromium.chrome:sandboxed_process0': ['18964'], 'org.chromium.chrome': ['18934', '19008']})

Locals:
  pids : defaultdict(<type 'list'>, {'org.chromium.chrome:sandboxed_process0': ['18964'], 'org.chromium.chrome': ['18934', '19008']})

INFO:py_utils.cloud_storage:Uploading /tmp/tmpkwJeEs.png to gs://chrome-telemetry-output/profiler-file-id_0-2016-10-13_07-10-1996860.png
View generated profiler files online at https://console.developers.google.com/m/cloudstorage/b/chrome-telemetry-output/o/profiler-file-id_0-2016-10-13_07-10-1996860.png for page http://dromaeo.com?jslib-event-prototype
[  PASSED  ] 0 tests.
[  FAILED  ] 1 test, listed below:
[  FAILED  ]  http://dromaeo.com?jslib-event-prototype

1 FAILED TEST




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