Don’t start executing a task when cancelToBeRescheduled is called before execute
#1370
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QueuedTask.execute
is called from a detached task inTaskScheduler.poke
but we insert it into thecurrentlyExecutingTasks
queue beforehand. This left a short windows in which we could cancel the task to reschedule it before it actually started executing.Change
QueuedTask
to just return immediately fromexecute
if it has been cancelled to be rescheduled beforehand.