Error Handling in Rust that Every Beginner should Know (actix-web-handler)

actix-web-handler-.rs

// main.rs
#[actix_web::main]
async fn main() -> std::io::Result<()> {
  HttpServer::new(move || {
    App::new()
      .service(web::resource("/queue/{id}").route(web::get().to(queue_handler::handle)))
    }).bind("0.0.0.0:8080")?.run().await
}

// queue_handler.rs
pub async fn handle(pool: web::Data<Pool>) -> Result<HttpResponse, Error> {
  ...
  let connection = pool.get().await?;
  let channel = connection.create_channel().await?;
  ...
}