You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: asyncpubsub_v5.rs
    path of file: ./repos/rumqtt/rumqttc/examples
    
    the code of the file until where you have to start completion: use rumqttc::v5::mqttbytes::QoS;
use tokio::{task, time};

use rumqttc::v5::{AsyncClient, MqttOptions};
use std::error::Error;
use std::time::Duration;

#[tokio::main(flavor = "current_thread")]
async fn main() -> Result<(), Box<dyn Error>> {
    pretty_env_logger::init();
    // color_backtrace::install();

    let mut mqttoptions = MqttOptions::new("test-1", "localhost", 1884);
    mqttoptions.set_keep_alive(Duration::from_secs(5));

    let (client, mut eventloop) = AsyncClient::new(mqttoptions, 10);
    task::spawn(async move {
        requests(client).await;
        time::sleep(Duration::from_secs(3)).await;
    });

    loop {
        let event = eventloop.poll().await;
      
    
async fn main() -> Result<(), Box<dyn Error>> {
    pretty_env_logger::init();
    // color_backtrace::install();

    let mut mqttoptions = MqttOptions::new("test-1", "localhost", 1884);
    mqttoptions.set_keep_alive(Duration::from_secs(5));

    let (client, mut eventloop) = AsyncClient::new(mqttoptions, 10);
    task::spawn(async move {
        requests(client).await;
        time::sleep(Duration::from_secs(3)).await;
    });

    loop {
        let event = eventloop.poll().await;
        match &event {
            Ok(v) => {
                println!("Event = {v:?}");
            }
            Err(e) => {
                println!("Error = {e:?}");
                return Ok(());
            }
        }
    }
}