Channels are there but you have to use an API for them. Green threads were removed a few years ago, though there are implementations of co-routines, etc. as cra

Channels are there but you have to use an API for them. Green threads were removed a few years ago, though there are implementations of co-routines, etc. as crates. Rust is getting an unstable form of async and await as macros/syntax extensions, and there are RFCs discussing adding them to the language in some form. This would still be a wrapper for futures, but a more ergonomic way of using them.