Fix futures/METADATA am: 1b4e3c7999 am: ed9fc8e7e1 am: 00b23eb1e9

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/futures/+/1414089

Change-Id: Ib5d5e6e1b8fe906d67884c96dd85ce7f5a38969c