[fasterthanlime]

Quick aside: if you're willing to live the nightly life (unstable rustc), the `type_alias_impl_trait` feature gets you most of the way to "async trait methods". You still have to have a `Future` associated type, but in impl blocks, it just becomes `type Future = impl Future<Output = Blah>`, and then the compiler infers what the concrete (and probably unnameable, if you use async blocks) type is - no need to mess with `Pin<Box<T>>`.

The most egregious code comes when implementing one of the `AsyncRead`/`AsyncWrite` traits or similar, and that can come up a bunch in backend services, for example if you want to record metrics on how/when/where data flows, apply some limits etc. I'm curious how the ecosystem will adapt once async trait methods land for real.