I just started looking at Rust and like what I see so far. I may be able to help; I worked on the Windows port of Go and put together the MinGW build environments as well as the binary installers.
I personally don't know what's necessary now, but if you feel like joining #rust or #rust-internals on irc.mozilla.org (which I recommend :) ), then vadimcn and klutzy are the people to talk to. (IRC handles match their GitHub names.)
https://mail.mozilla.org/listinfo/rust-dev
HN comments and IRC chats tend to get lost in the shuffle without always attracting the attention of the devs.