Migrate to cargo_embargo. am: a4c1350c71 am: a83b95d3cc am: adf31a2702

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/tracing-attributes/+/2836876

Change-Id: I2061fb5ec70213d560879f441062650ea3a18dd1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>