code: func (daemon *Daemon) killPossiblyDeadProcess(container *containerpkg.Container, sig int) error {
  	err := daemon.killWithSignal(container, sig)
  	if errdefs.IsNotFound(err) {
  		e := errNoSuchProcess{container.GetPID(), sig}
  		logrus.Debug(e)
  		return e
  	}
  	return err
  }
docs: // killPossibleDeadProcess is a wrapper around killSig() suppressing "no such process" error.