Migrate to cargo_embargo. am: a4c1350c71 am: f872848ecb

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

Change-Id: I3992a7ee0368454bd3f98560e1f25e8f1ba9dc49
Signed-off-by: Automerger Merge Worker <[email protected]>