errkind

const TOCTOU = ftag.Kind("TOCTOU")

TOCTOU is an error kind indicating a Time-Of-Check to Time-Of-Use race. For example, an entity (e.g. a job) was concurrently modified between the moment its state was read and the moment an update was attempted. It will typically result in a 400 response, so clients can retry the operation with fresh data instead of receiving an opaque server error.