I don’t know what you mean by manual memory management. Memory management in rust is fully automated. The only manual thing is if you want to annotate lifetimes to ensure memory is available past implicit lifetimes, or if the line time of something can’t be automatically derived. Borrow semantics are not manual memory management. You don’t directly control when memory is freed in rust, but because it’s (often) stack based it’s usually pretty obvious memory is freed when the stack is unwound.

I feel like you’re confusing rust with c/c++ in this discussion.

I don’t find go faster to write in at all. I feel like they’re about the same, but I find go package management to be a mess and prefer cargo. Rust however does require you to be more aware of memory lifetime and ownership, and provides generally better performance in exchange.