[aw1621107]

> but values will be destroyed immediately after their last use

For what it's worth, it appears this was considered for Rust at some point but the devs decided against it. As described by Steve Klabnik in 2018 [0]:

> This was called “early drop”, and we didn’t implement it because of worries about unsafe code. Yes, the compiler could tell for safe code, and it would be fine, but unsafe code cannot, by definition, be checked.

[0]: https://users.rust-lang.org/t/drop-values-as-soon-as-possibl...