I'm surprised to see that the author's ipnsort is not published on crates.io, even though it performs at first or second place on most of the benchmarks for unstable sorts and it passes all the safety and correctness criteria, all while also being able to deterministically panic to inform the user of a logic bug in their comparison function.

https://github.com/Voultapher/sort-research-rs/tree/main/ipn...