Depends on where you want to take your career.<p>Rust and Go are different tools that are good at solving different categories of problems. Additionally they are both languages that will provide different lessons about modern programming ergonomics.<p>If you expect your programming career to be solving more high level "enterprise-y" problems like writing APIs, web services, and middleware, learning Go is probably going to be more useful to you.<p>If you think your programming career is going to be more low-level like programming operating systems, libraries, or drivers, learning Rust is probably going to be more valuable to you.