Upgrade rust/crates/crossbeam-channel to 0.5.1 am: f6b6a424b1 am: b930e5a382

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/crossbeam-channel/+/1712592

Change-Id: I9f8e9ccd992673f2a137df4ccdaecf67c407b02e