IssueTracker

This is logged here. The values are PIDs of the subprocesses:

2022-09-02 15:16:19.699 9160-9173/de.welt.benchmark E/TestRunner: java.lang.IllegalStateException:             Perfetto unexpected exit code, output = 9462
    EXITCODE=2

2022-09-02 15:16:57.418 9160-9173/de.welt.benchmark E/TestRunner: java.lang.IllegalStateException:             Perfetto unexpected exit code, output = 9803
    EXITCODE=2

And the actual error code is 2.

Looking at perfetto code, it seems that not all the data sources are ready (code). Data sources are defined here.

I wonder if some of those data sources are not supported on that device that runs Android 6.