I'd say with a caveat it depends if you know what you need to build. You can have 0 bugs, but if you also have 0 users, it's not going to end well. If you've a

I'd say with a caveat it depends if you know what you need to build. You can have 0 bugs, but if you also have 0 users, it's not going to end well. If you've already built a slow or not-so-reliable prototype in a scripting language, and have users pushing it beyond its limits, then go ahead and make the proper version in Rust.