There are only seven instances of unsafe: https://github.com/BurntSushi/ripgrep/search?q=unsafe&type=C...

Four of them are related to calling libc/kernel32 functions, which need unsafe to be called. One is due to using a memory map, which needs unsafe to be called. Only two are actual unsafe rust functions.

That's a "real-world" example though, you're asking for a more specific implementation. I can't compare because my Go would be very poor; if you posted a Go implementation, I'd be willing to give this a shot and write a Rust one.

(Mostly out of personal interest, I don't think it really proves anything larger about the two languages.)