TIL about the box.leak() method in Rust: https://doc.rust-lang.org/std/boxed/struct.Box.html#method.leak
This leaks the box, but it also gives you a reference that can live longer! E.g. you can leak a Box<u64> and treat it as 'static.
It makes sense, but being able to use a value after leaking is new idea to me.