[orthoxerox]

Sadly, I agree. It's a lot like C#'s quest against nullability: the feature was introduced too late into a stable design in a form that is obviously incomplete, tries too hard to maintain compatibility with existing code and fails.

[likeabbas]

I've never worked with C# so I need to look into that.

The one saving grace with Rust is if everyone decides to say "screw async" and just builds synchronous APIs, then we use something like [May](https://github.com/Xudong-Huang/may) for green threading.