Add rust_test and update TEST_MAPPING am: 7062658fd0 am: deb3b8ef51 am: a3532cd1cd am: ca7e6fe2ae

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/pin-utils/+/1365106

Change-Id: I2ddfab3d0e1a5bbc0aa3133cfedb3d5438b9b303