When looking at the stdio log of a failed builder, I found it was over 90MB and took 2 days 11 hours to run. This build failure seems to have been fixed as part of https://crbug.com/669037 but I wanted to file this separate bug for the infra. Why didn't this bot timeout much earlier on the 'Sharded Perf Tests' step?

The error log is full of this line repeating about 90,000 times:
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IOError: [Errno 2] No such file or directory: '/tmp/tmpOygadE/results-chart.json'
E 10138.131s run_no_devices_tests  This usually means that telemetry did not run, so it could not generate the file. Please check the device running the test.
I 10138.131s run_no_devices_tests  resource_sizes (CronetSample.apk) : exit_code=1 in 0 secs.
W 10138.131s run_no_devices_tests  No files in the output dir. Archive is empty.
I 10138.859s run_no_devices_tests  [host]:/b/build/slave/Android_Cronet_Lollipop_Builder/build/src> build/android/resource_sizes.py /b/build/slave/Android_Cronet_Lollipop_Builder/build/src/out/Release/apks/CronetSample.apk --output-dir=/tmp/tmpyj1cX8
E 10139.002s run_no_devices_tests  Exception when reading chartjson.
Traceback (most recent call last):
  File "/b/build/slave/Android_Cronet_Lollipop_Builder/build/src/build/android/pylib/perf/perf_test_instance.py", line 163, in ReadChartjsonOutput
    with open(json_output_path) as f:
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Build log: https://luci-milo.appspot.com/buildbot/chromium.android/Android%20Cronet%20Lollipop%20Builder/4289