Rust Coreutils 0.12 was released with compatibility fixes prioritized for Ubuntu Linux, resolving issues impacting versions 25.10, 26.04 LTS, and paving the way for a complete transition to Rust Coreutils in Ubuntu 26.10. The release focuses on bug fixes reported by Ubuntu users and maintainers.
Development for Rust Coreutils 0.12 centered on “compatibility fixes for our Ubuntu friends” ahead of the next Ubuntu Linux update. According to the release announcement, “the bugs they asked us to prioritize are all fixed here, along with a long tail of smaller divergences from GNU.” Specific fixes include preventing `rm` from segfaulting with deeply nested directories, addressing data loss in parallel `install -D`, enabling `du` support for 32-bit architectures, and resolving name collisions with `cp -R`, as well as other bugs.
The release also removed the last C dependency, `expr`, and implemented security hardening and cross-platform compatibility improvements. Performance enhancements were made to utilities like `sort`, `du`, and `cp`. Rust Coreutils currently achieves approximately a 95% pass rate when compared to GNU Coreutils’ test suite. Further details and downloads are available on GitHub.
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