Rust in stable releases hasn't made any serious breaking changes since 1.0 in 2015. There were tiny breakages in edge cases caused by more or less bug fixes, in

Rust in stable releases hasn't made any serious breaking changes since 1.0 in 2015. There were tiny breakages in edge cases caused by more or less bug fixes, in line from breakages you might get when upgrading GCC to a newer version. If you find your dependencies are breaking: • Keep a lockfile (Cargo.lock) committed in your project, so that your deps won't suddenly get updated to some newer, potentially buggy/incompatible version. • If you're updating dependencies, also update the compiler. It's possible that new versions of dependencies require latest version of compiler.