Could we use a single bug to track all improvements to metadata collection?
Creating separate bugs is OK, but not that nice as it's hard to track all of them in one place.

The following revision refers to this bug:
  https://chromium.googlesource.com/infra/infra.git/+/4167fabff66f36b317553ea8ee8a2a165891e383

commit 4167fabff66f36b317553ea8ee8a2a165891e383
Author: lijeffrey <lijeffrey@chromium.org>
Date: Tue Apr 26 19:13:38 2016

[Findit] Adding improved error detection to MonitorTryJobPipeline

BUG= 605344 ,  606038 

Review URL: https://codereview.chromium.org/1921493002

[add] https://crrev.com/4167fabff66f36b317553ea8ee8a2a165891e383/appengine/findit/common/waterfall/try_job_error.py
[modify] https://crrev.com/4167fabff66f36b317553ea8ee8a2a165891e383/appengine/findit/model/wf_try_job_data.py
[modify] https://crrev.com/4167fabff66f36b317553ea8ee8a2a165891e383/appengine/findit/waterfall/monitor_try_job_pipeline.py
[modify] https://crrev.com/4167fabff66f36b317553ea8ee8a2a165891e383/appengine/findit/waterfall/test/monitor_try_job_pipeline_test.py

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/overlays/board-overlays/+/bdac966fb1be3aae02201dbc0917ae2a1952b028

commit bdac966fb1be3aae02201dbc0917ae2a1952b028
Author: Cheng-Yi Chiang <cychiang@chromium.org>
Date: Sat Mar 18 05:00:41 2017

lars: Fix pcm number for HDMI jack

Lars uses pcm=5 instead of pcm=4.

BUG= chromium:606038 
TEST=None

Change-Id: I73abf2cf4dc2138b2532790fddad19a8a5861771
Reviewed-on: https://chromium-review.googlesource.com/456442
Commit-Ready: Cheng-Yi Chiang <cychiang@chromium.org>
Tested-by: Cheng-Yi Chiang <cychiang@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>

[rename] https://crrev.com/bdac966fb1be3aae02201dbc0917ae2a1952b028/overlay-lars/chromeos-base/chromeos-bsp-lars/chromeos-bsp-lars-0.0.1-r16.ebuild
[modify] https://crrev.com/bdac966fb1be3aae02201dbc0917ae2a1952b028/overlay-lars/chromeos-base/chromeos-bsp-lars/files/audio-config/ucm-config/sklnau8825max/HiFi.conf

Sorry! the bug number in #6 was wrong, it should be 636038.