fn next_from_queue(
queue: &mut VecDeque<PlannedChunk>,
max_items: usize,
next_item_id: &mut u64,
) -> Vec<RuntimeWorkItem>fn next_from_queue(
queue: &mut VecDeque<PlannedChunk>,
max_items: usize,
next_item_id: &mut u64,
) -> Vec<RuntimeWorkItem>