This pinpoint[1] run for rendering.mobile on the android-nexus5x-perf bot failed with the following error:

(WARNING) 2018-11-08 22:23:34,975 browser_finder.FindBrowser:107  Cannot find any matched browser
rendering.mobile is disabled on the selected browser
This platform is not supported for this benchmark. If this is in error please add it to the benchmark's supported platforms.
(INFO) 2018-11-08 22:23:35,077 android_power_monitor_controller._ReenableChargingIfNeeded:14  Charging status checked at exit.
Command ['/usr/bin/python', '../../tools/perf/run_benchmark', 'rendering.mobile', '--pageset-repeat', '1', '--browser', 'android-chromium', '-v', '--upload-results', '--story-tag-filter=motionmark', '--results-label', 'chromium@4e5b2c2 + 6274a70', '--output-format=histograms', '--output-dir', '/b/swarming/w/it0cKiZF/tmpU7zN4Otelemetry', '--output-format=json-test-results'] returned exit code 0
Duration of executing benchmark rendering.mobile: 14 seconds

[1]: https://pinpoint-dot-chromeperf.appspot.com/job/149a52abe40000