Coroutines are one means of implementing async; the way they are implemented in Rust is more like building a state machine out of the async function. It can still be mapped to coroutines, and there are probably crates that use async and macros to make coroutines usable on stable, but the effort to have a stable language feature is still ongoing, with https://lang-team.rust-lang.org/design_notes/general_coroutines.html giving the overview.

@Vorpal Having a free implementation of 802.15.4 is very good news. The initialization blob is still a downside compared to Nordic chips, but it’s good progress and shows that they’re interested in doing it right. I’m hoping it’ll be blob-free eventually for all their radios.

@Sibbo It’s been a wild ride ridden with back-and-forths about where where Self: 'a goes and whether it’s needed, but that’s largely past (now that it’s stable), and my use case (the coap-message crate) works fine with it.