Rust development was done in public (unlike Go or Swift which started out privately), so we had a very long 0.x period which was public and had tons of breakage

Rust development was done in public (unlike Go or Swift which started out privately), so we had a very long 0.x period which was public and had tons of breakages where the language designers tinkered with just about every tradeoff. So it's easy to see where you get the impression that Rust is prone to breakages, but that doesn't happen anymore.