}
		for _, de := range entries {
			if de.IsDir() || !strings.HasPrefix(de.Name(), "go1.") {
				continue
			}
			info, err := de.Info()
			if err != nil {
				continue
			}
			v, ok := pathVersion(dir, de, info)
			if !ok || !strings.HasPrefix(v, "1.") || have[v] {
				continue
			}
			have[v] = true
			list = append(list, v)
		}
	}
	sort.Slice(list, func(i, j int) bool {