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: log_export.rs
    path of file: ./repos/sdk-core/core/src/telemetry
    
    the code of the file until where you have to start completion: use futures::channel::mpsc::{channel, Receiver, Sender};
use parking_lot::Mutex;
use ri
    
    fn assert_logs(logs: Vec<CoreLog>) {
        // Verify debug log was not forwarded
        assert!(!logs.iter().any(|l| l.message == "debug"));
        assert_eq!(logs.len(), 4);
        // Ensure fields are attached to events properly
        let info_msg = &logs[2];
        assert_eq!(info_msg.message, "info");
        assert_eq!(info_msg.fields.len(), 4);
        assert_eq!(info_msg.fields.get("huh"), Some(&"wat".into()));
        assert_eq!(info_msg.fields.get("foo"), Some(&"bar".into()));
        assert_eq!(info_msg.fields.get("bros"), Some(&"brohemian".into()));
        assert_eq!(info_msg.fields.get("thing"), Some(&"hi".into()));
    }