I have a failing test in my suite and now I am using the Android Orchestrator, but all I get is this message:
Test instrumentation process crashed.
For anyone who still stumbles upon this, this Stack Overflow answer was helpful. Pulling the files off of the emulator I was running required running adb as root first.
adb root
and then
adb pull /data/data/android.support.test.orchestrator/files/