X_JOB_NOT_CANCELLABLE
Means
the job cannot be cancelled
Typical cause
x jobs cancel reached a job that already finished, or an id no queue holds — not a failure of the command, but never a silent success either: an operator cancelling a runaway pass has to know whether they stopped it or missed it. Also raised by a driver with no introspect.cancel (the redis and nats stubs, and any hand-rolled driver)
Fix
x jobs list --state running --json — for a driver that cannot cancel one job, drop the jobs: field from apps/<app>/runtime.ts so the boot installs postgresJobDriver() over DATABASE_URL — only the pg driver implements introspect.cancel — then x jobs cancel <id> --json