Alright I got tic-tac-toe working in both Go and (omg the struggle) Rust!
Here's my long blog post about it: https://sts10.github.io/2017/11/18/trying-go-and-rust.html (tl;dr Rust seems like a really cool idea, but Go seems more practical for most)
Golang repo: https://github.com/sts10/tic-tac-go
Rust repo: https://github.com/sts10/rusty-tac