Many reasons to choose go over rust. First and foremost, Rust was not 1.0 and was still making breaking changes when Kubernetes came around. Other things like

Many reasons to choose go over rust. First and foremost, Rust was not 1.0 and was still making breaking changes when Kubernetes came around. Other things like the situation with async/coroutines is still it great in rust. Go is, syntactically, a much simpler language than rust. It all depends on what you need, what you want, and where then community around it is (e.g. Docker came first and was written in Go).