GitHub's hosted runner has 4 cores. The build job moves to namespace-profile-linux-amd64-16x32; the publish job, which only copies files and holds the bucket's key, stays where it is. Those runners' kernel has no Landlock, so pacman 7 fails its first sync in a container there. The ISO build already steps around that; the install test's container does the same now. The job also prints what it is running on: CPU, memory, LSMs and /dev/kvm.