2026-05-11T09:56:19.401Z [ INFO] Starting package build
2026-05-11T09:56:19.402Z [ INFO] Unpacking bootstrap kit bootstrap=/data/packages/SmartOS/bootstrap-pbulk/bootstrap-upstream-bulktest.tar.gz dest=/data/chroot/15
2026-05-11T09:56:19.657Z [ INFO] Running make stage stage=pre-clean
2026-05-11T09:56:21.618Z [ INFO] Running make stage stage=checksum
2026-05-11T09:56:21.886Z [ERROR] Package build failed
2026-05-11T09:56:22.171Z [ WARN] Failed to remove directory path=/data/chroot/15/opt/pkg error=Device busy (os error 16)