There is no Rust foundation. All of the design and development happens in the open on Github, a public discourse instance, and a few chat programs (zulip, discord, matrix). I believe the Fuchsia project was quite involved in the design of the async-await feature, along with the team behind `tokio` and others.
Interesting! Async-await is mentioned as a "pro" for Dart and Rust ("Asynchronous programs can be written using straight-line code"). Seems they really like async-await, and they had more success getting Rust to support it than they had with Go - which might have led to some Google-internal strife?
