[tialaramex]

I think documentation is the right layer to express what is or is not a goal for the crate. Whether you met the goal is not something you as author can judge reliably.

https://crates.io/crates/misfortunate - is not intended to be used seriously. A redditor pointed out that arguably my Double (a smart pointer where the mutable and immutable references point to separate things and you can swap their places) might actually be useful! But I don't want you to depend on misfortunate::Double in your real software project - if that is useful (and maybe, with careful documentation, it is) you should give it a name suiting its purpose and include it in a crate of stuff that's intended to be used, not as something like a practical joke or thought experiment.