Merge "rust: Defaulting --size_t-is-usize" am: cae809a87c

Original change: https://android-review.googlesource.com/c/platform/system/security/+/2183566

Change-Id: I9c1c38ae76dd30ccbd11dbcf9bec27fa0d837b79
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>