Migrate to cargo_embargo. am: 2797491abe am: 52e56157eb am: 70ed4009e5

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/crossbeam-utils/+/2828316

Change-Id: I97745588860dd8c5ff346ffdb1eb5c481c580682
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>