Please see my comment below (https://news.ycombinator.com/item?id=9447938 https://news.ycombinator.com/item?id=9447938). There is no risk to Rust's basic safety

Please see my comment below (https://news.ycombinator.com/item?id=9447938 https://news.ycombinator.com/item?id=9447938). There is no risk to Rust's basic safety guarantees here, and there are several ways forward (including introducing things like `Leak` backwards-compatibly later on).