Migrate to cargo_embargo. am: a67d260523 am: 334a4b4d1c

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

Change-Id: I545c8575888d14c7ff59bf5210fcf2dbc84adb8e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>