Merge "adb: treat non-successful inc-server runs as failures" am: ff502379...

Merge "adb: treat non-successful inc-server runs as failures" am: ff502379 am: f24a7e1f am: 7b50bbc0

Original change: https://android-review.googlesource.com/c/platform/system/core/+/1322109

Change-Id: Ie19e8cc7c0e11aeec8b482d35542d3b187c48d50