Worked on the llvm/llvm-zorg repository to improve continuous integration stability by addressing persistent failures in the build system. Focused on build system configuration using Python, the developer removed the non-functional bolt-aarch64-ubuntu-clang-meta builder from Buildbot, which had been generating repeated errors and providing little actionable feedback. This targeted change reduced unnecessary CI noise and streamlined the maintenance process, resulting in faster and more reliable build feedback for the development team. The work was limited to bug fixing rather than feature development, emphasizing careful analysis and precise modification of CI infrastructure to enhance overall build reliability and efficiency within the project.