Practically useless was a bit of a stretch. Unsafe rust is definitely safer than plain C or Assembly. I admit I was a bit riled up after reading the "compile to asm.js" comment.

Cool stuff though, I really hope rust catches fire soon. I love that it has revitalized the appeal of implementing operating system level projects like text editors and shells. I never would have wanted to try and write a windowing system before Rust. Now that's something I'm actively investigating for fun.