Build 4350 is red due to a recent change in bisect. If you look at the "reason" step: https://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus5_perf_bisect/builds/4350/steps/Failure%20reason/logs/reason

You'll see: "Bisect cannot identify a culprit: Bisect failed to reproduce the regression with enough confidence." This is expected and no need to file a bug on it.

I also looked at the other failed steps on the builder (build with patch failed, patch failed). Looks like it was incorrectly used as a trybot, no need to file bugs on those.