Jasper worked on the sonic-net/sonic-buildimage repository, focusing on improving build reliability and reproducibility. He addressed a build failure related to the time crate update by enforcing strict dependency locking in the Rust-based build process. By updating the Makefile to require Cargo to use the lockfile during installation, Jasper ensured that only compatible dependencies were used, preventing drift and reducing build failures. His work validated reproducible builds across both the 202511 and master branches. Throughout the month, Jasper applied his skills in Rust and build automation, delivering a targeted bug fix that enhanced the determinism of the build pipeline.