[automerger skipped] Add FAILED: prefix to RBE Fatal error message" am:...

[automerger skipped] Add FAILED: prefix to RBE Fatal error message" am: 907bbdfc am: 46d4a140 -s ours am: 0b7859c0 -s ours

am skip reason: Merged-In Ie0c9acee2739acf149384e33804b5fca3273c24f with SHA-1 1e4d5f3e is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/soong/+/15625816

Change-Id: I74586233adc72131f77e4fb6c6ee777df07dffd2