[sunshowers]

When Rust's sort algorithm changed to detect total order violations, it caused some breakage. See for example: https://github.com/mitsuhiko/insta/pull/586

I recently wrote a blog post which (while not the main focus) includes a discussion on randomized testing of sort algorithms in the face of inconsistent comparators: https://sunshowers.io/posts/monads-through-pbt/ section 2.