On novox at 15:27:36 a have reading "health failed, phase applying" at the
controller's new fingerprint held its canary two seconds before the new
build was healthy: Wants held on a failed health whatever the phase. A
failed health while the node backs up, applies or checks is a step of the
move, not its outcome, so it holds nothing now.
Every other Health read in the assigner (rule 3's healthy, rule 5's
providedHealthy, the world's lastHealthy) already asks for phase running.
Test from the live row first, seen failing before the fix.
jschoubben
706169aa8a