X_DRILL_FAILED
Means
a fault drill property did not hold
Typical cause
x drill played a fault against the app and a framework contract the drill states (a coded answer, a bounded request, readiness, recovery, a terminal job, a drained role) was not met; the property and its evidence are printed
Fix
x drill <name> --json — read the failed property and its evidence, then explain the code that evidence names: x errors explain <CODE>