Migrate to cargo_embargo. am: cbb2c115f9

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/tokio-stream/+/2828230

Change-Id: Iad6df37acf83b0b298943afa52f4904a3bce5e8b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>