x[a.header]++
					}
					latestCount = 0
					for k, v := range x {
						if v < latestCount {
							continue
						}
						if v == latestCount && latest.header.sortsBefore(k) {
							// Tiebreak, use sort.
							continue
						}
						for _, a := range tops {
							hdr := a.header
							if !strict {
								hdr.Signature = [4]byte{}
							}
							if hdr == k {

	// content that may have been created, we always serve
	// the latest object.
	sort.Slice(results, func(i, j int) bool {
		a, b := results[i], results[j]
		if a.oi.ModTime.Equal(b.oi.ModTime) {
			// On tiebreak, select the lowest pool index.
			return a.zIdx < b.zIdx
		}
		return a.oi.ModTime.After(b.oi.ModTime)
	})

	for _, res := range results {
		err := res.err
		if err == nil {