message: suppress warning of unused Result
diff: @@ -3,7 +3,7 @@ use std::io;
  use tokio::signal::ctrl_c;
  pub async fn create_signal_monitor() -> io::Result<()> {
  - ctrl_c().await;
  + let _ = ctrl_c().await;
  info!("received CTRL-C, exiting");
  Ok(())
  