[automerger skipped] Mark Android R (rvc-dev-plus-aosp-without-vendor@6692709) as merged am: f77a8daaeb -s ours am: 4254c30c6e -s ours

am skip reason: Change-Id If35d6403864530c9eabaa45acf067a8b78725d4b with SHA-1 cefb0c13fd is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/rust/crates/structopt/+/12469355

Change-Id: I6afafc9e20c5926864a601279b45ed661622d48c