Rust producer consumer pattern, sending functions between channels

conprod.rs

use std::{sync::mpsc, thread};

type Closure =  Box<dyn FnOnce() + Send + 'static>;

fn main() {
    let (tx, rx) = mpsc::channel::<Closure>();
    let handle = thread::spawn(move ||{
        while let Ok(data) = rx.recv(){
            data();
        }
    });
    
    for i in 0..10 {
        tx.send(Box::new(move ||{
            println!("data:{}", i);
        })).unwrap();
    }
    
    drop(tx);
    handle.join().expect("cant merge thread");