futures-rs

m/tokio-rs/tokio But it seems like you're most interested in Erlang-style actors with M:N green threads? The issue here is that—as best I remember the history of Rust—the Rust maintainers decided that green threads were simply too high a level of abstraction for Rust. I think Rust will eventually move back in that direction, first using futures+tokio+async I/O, and then by eventually adding async/await sugar on top. That way, you'll only pay for coroutines/green threads when you explicitly opt in. But it will take a year or so for all this to start maturing, I think. In the meantime, tokio's method-chaining syntax should actually be somewhat tolerable, especially because Rust has a `#[must_use]` attribute that prevents you from forgetting to use a future. If you're lazy, just run everything through rustfmt to get the indentation right.