Migrate to cargo_embargo. am: a67d260523 am: 334a4b4d1c am: dd342fb6ee

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/bencher/+/2797709

Change-Id: I6b33c8954a330d86824b088bc4fe37c52fba3c1f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>