code: func renameExited() error {
  	if err := pkgPod.WalkPods(getDataDir(), pkgPod.IncludeRunDir, func(p *pkgPod.Pod) {
  		if p.State() == pkgPod.Exited {
  			stderr.Printf("moving pod %q to garbage", p.UUID)
  			if err := p.ToExitedGarbage(); err != nil && err != os.ErrNotExist {
  				stderr.PrintE("rename error", err)
  			}
  		}
  	}); err != nil {
  		return err
  	}
  
  	return nil
  }
docs: // renameExited renames exited pods to the exitedGarbage directory