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: put_log_events.rs
    path of file: ./repos/rusoto/rusoto/services/logs/examples
    
    the code of the file until where you have to start completion: //! ## Put Log Events
//!
//! The following code shows a simple example of using Rusoto's CloudWatchLogs
//! API to send a single log event to the 'testing' log stream in the 'testing'
//! log group.
use chrono::Utc;

use rusoto_core::Region;
use rusoto_logs::{
    CloudWatchLogs, CloudWatchLogsClient, DescribeLogStreamsRequest, InputLogEvent,
    PutLogEventsRequest,
};
use std::default::Default;

#[tokio::main]
async fn main() {
    const LOG_GROUP_NAME: &str = "testin
    
async fn main() {
    const LOG_GROUP_NAME: &str = "testing";
    const LOG_STREAM_NAME: &str = "testing";

    let client = CloudWatchLogsClient::new(Region::UsEast2);

    let input_log_event = InputLogEvent {
        message: "Test log message".to_string(),
        timestamp: Utc::now().timestamp_millis(), // milliseconds epoch
    };

    // We need the log stream to get the sequence token
    let mut desc_streams_req: DescribeLogStreamsRequest = Default::default();
    desc_streams_req.log_group_name = LOG_GROUP_NAME.to_string();
    let streams_resp = client.describe_log_streams(desc_streams_req).await;
    let log_streams = streams_resp.unwrap().log_streams.unwrap();
    let stream = &log_streams
        .iter()
        .find(|s| s.log_stream_name == Some(LOG_STREAM_NAME.to_string()))
        .unwrap();
    let sequence_token = stream.upload_sequence_token.clone();

    let put_log_events_request = PutLogEventsRequest {
        log_events: vec![input_log_event], // > 1 must sort by timestamp ASC
        log_group_name: LOG_GROUP_NAME.to_string(),
        log_stream_name: LOG_STREAM_NAME.to_string(),
        sequence_token,
    };

    let resp = client.put_log_events(put_log_events_request).await;
    println!("{:#?}", resp);
}