> only recently have agents started getting Rust code right on the first try

This is such a silly thing to say. Either you set the bar so low that "hello world" qualifies or you expect LLMs to be able to reason about lifetimes, which they clearly cannot. But LLMs were never very good at full-program reasoning in any language.

I don't see this language fixing this, but it's not trying to—it just seems to be removing cruft