About a year ago, I worked on a similar tool, using the same rustdoc-based idea, [cargo-breaking](https://github.com/iomentum/cargo-breaking/tree/zdimension/r...), but since cargo-semver-checks was released around the same time and used a better general approach to change detection, we never bothered actually releasing it and ended up just archiving the repo
cargo-breaking is cool! I only learned of it well after I had published cargo-semver-checks, but your logo is awesome and the tool was definitely a good idea, obviously.
If you ever feel like doing more work in the space, I'd love to work together on cargo-semver-checks!
