Whilst an easy start is nice, any language that you can pick up with no effort just means you're learning the same language + paradigm that you already know with a few differing features (in go's case CSP). Nothing wrong with that, CSP is awesome etc

I'm not a rust dev (definitely interested in picking it up though), but heavily into clojure and learning haskell slowly on the side. I hear this complaint a lot from people who think that because they learnt C#, Go, Java and Swift in a weekend that all languages will be just as quick to stick in their heads.