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: lib.rs
    path of file: ./repos/rusoto/rusoto/services/logs/src
    
    the code of the file until where you have to start completion: // =================================================================
//
//                           * WARNING *
//
//                    This file is generated!
//
//  Changes made to this file will be overwritten. If changes are
//  requi
    
//! 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);
//! }