A registration asked the forge while node-tools re-served after a tool-runner rollout, heard "nothing serves gitea.gitea_api", and failed a good build's plan. The bus's not-served answer is now link.ErrNothingServes (and a timeout link.ErrNoAnswer), and the registration asks again for up to 90 s on those alone, never on a refusal; past the bound it fails saying how long it waited.