Migrate to cargo_embargo. am: 8ba44e9aae am: 74075eaf4f

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/crossbeam-epoch/+/2829795

Change-Id: Ibe77d87ef5ed203c06a7918d524a5b282bd29426
Signed-off-by: Automerger Merge Worker <[email protected]>