message: backend-proxy: don't panic if address already binded
  Don't panic. Just exit with error and print error message.
diff: @@ -297,6 +297,7 @@ async fn main() {
  .launch()
  .await
  {
  - panic!("Rocket didn't launch! Err:{:#?}", e);
  + error!("Rocket didn't launch! Err:{:#?}", e);
  + std::process::exit(-1);
  }
  }
  