Mark ab/6881855 as merged am: 1a8d8ce261 am: 0db6aa7d94

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/rust/crates/structopt/+/13112870

Change-Id: I53b686bb4a92ee1bc4d8c41ceaa2c8d3fafc9c13