code: func renameAborted() error {
  	if err := pkgPod.WalkPods(getDataDir(), pkgPod.IncludePrepareDir, func(p *pkgPod.Pod) {
  		if p.State() == pkgPod.AbortedPrepare {
  			stderr.Printf("moving failed prepare %q to garbage", p.UUID)
  			if err := p.ToGarbage(); err != nil && err != os.ErrNotExist {
  				stderr.PrintE("rename error", err)
  			}
  		}
  	}); err != nil {
  		return err
  	}
  	return nil
  }
docs: // renameAborted renames failed prepares to the garbage directory