Merge "Update TEST_MAPPING" am: b2b9cfefee am: d71a842331

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/downcast-rs/+/2125795

Change-Id: I9f8f1f6fe1b6ad46bc29021069380ddc88c515e7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>