Merge "Upgrade rust/crates/structopt-derive to 0.4.16" am: 6a8fd71e87 am: 5162c84530 am: 08b93b9202 am: 3ad58637ab

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/structopt-derive/+/1833387

Change-Id: Ic7f3faa0f6cc3901602d91aa2d11e068f7c71140