[pcwalton]

No, it doesn't. Basically all async I/O code in the Rust ecosystem uses mio.

And eventually a standard interface will be offered. Just not before it's ready.

[15155]

Basically all async I/O code in the Ruby ecosystem uses EventMachine.

That's not the point: more of an ecosystem is built around the stdlib's blocking I/O than mio. New projects everyday are built around things that will eventually be incompatible.