Both, given that programming languages shouldn't be a horse race. They're different languages that fit differing niches: both address concurrency and paralleli

Both, given that programming languages shouldn't be a horse race. They're different languages that fit differing niches: both address concurrency and parallelism at the language level, yes, but at least from my perspective, Rust is oriented towards systems programming (task-level GC, lower level memory access, and strong static safety guarantees), while Go is for rapid network service development.