Migrate to cargo_embargo. am: cbb2c115f9 am: 3855d14388 am: 85e9eb4328

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

Change-Id: I79778581028f1d42fd2a66899e48b04c91258c8a
Signed-off-by: Automerger Merge Worker <[email protected]>