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: timeouts.rs
    path of file: ./repos/aws-doc-sdk-examples/rustv1/examples/sdk-config/src/bin
    
    the code of the file until where you have to start completion: // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0

#![allow(clippy::result_large_err)]

use aws_config::timeout::TimeoutConfig;
use std::time::Duration;

/// The timeouts in this example are set to one second which may or may not be fast enough to
/// trigger them based on your connection speeds. If you want to ensure a timeout gets triggered
/// so you can see what the resulting error looks like, change the durations from
/// `Duration::from_secs(2)` to `Duration::from_millis(2)`.
///
/// You could _also_ trigger the timeouts by replacing the HTTPS connector _(`conns::https()`)_
/// with a `NeverConnector`. That's how we consistently trigger timeouts during testing.
#[tokio::main]
async fn main() -> Result<(), aws_sdk_s3::Error> {
    tracing_subscriber::fmt::init();

    // Here we create an object that holds timeout-related configuration.
    let timeout_config = TimeoutConfig::builder()
        // This timeout acts at the "Request to a service" level. When the SDK makes a request to a
        // service, that "request" can contain several HTTP requests. This way, you can retry
        // failures that are likely spurious, or refresh credentials.
        .operation_timeout(Duration::from_secs(2))
        // This timeout acts at the "HTTP request
    
async fn main() -> Result<(), aws_sdk_s3::Error> {
    tracing_subscriber::fmt::init();

    // Here we create an object that holds timeout-related configuration.
    let timeout_config = TimeoutConfig::builder()
        // This timeout acts at the "Request to a service" level. When the SDK makes a request to a
        // service, that "request" can contain several HTTP requests. This way, you can retry
        // failures that are likely spurious, or refresh credentials.
        .operation_timeout(Duration::from_secs(2))
        // This timeout acts at the "HTTP request" level and sets a separate timeout for each
        // HTTP request made as part of a "service request."
        .operation_attempt_timeout(Duration::from_secs(2))
        // A limit on the amount of time an application takes to attempt to read the first byte over
        // an established, open connection after a write request.
        // Also known as the "time to first byte" timeout.
        .read_timeout(Duration::from_secs(2))
        // A time limit for completing the connect-handshake. The time starts when
        // making an initial connect attempt on a socket.
        .connect_timeout(Duration::from_secs(2))
        .build();

    let config = aws_config::from_env()
        .timeout_config(timeout_config.clone())
        .load()
        .await;
    let client = aws_sdk_s3::Client::new(&config);

    match client.list_buckets().send().await {
        Ok(response) => {
            for bucket in response.buckets() {
                println!("bucket: {:?}", bucket.name().unwrap_or_default())
            }
        }
        Err(err) => {
            println!("{err}");
        }
    }

    Ok(())
}