pub fn reserves(sources: &[SourcePlan], allocation: &[usize]) -> Vec<usize>Expand description
The sources allocate gave no connections to, best-ranked first.
These are not rejected sources — they are the bench. When a source fails,
crate::sched::Scheduler::replace_source substitutes one of these in
place, which is what makes a nineteen-mirror list worth more than a
four-mirror one at four connections.