Fabio Berton focused on enhancing the stability and efficiency of the Poky build workflow in the zephyrproject-rtos/poky repository. He addressed sporadic ccache cache misses during Bitbake parallel builds by tuning build system configuration and caching parameters, specifically adding include_file_ctime to ccache’s sloppiness settings. This technical adjustment reduced CI build times and improved reliability by mitigating issues caused by file ctime changes in parallel execution. Working primarily with configuration files and caching mechanisms, Fabio’s work improved build reproducibility and throughput. Over the month, he demonstrated depth in build system optimization, though his contributions centered on bug fixes rather than new features.