Shared via Rust Playground

playground.rs

use std::collections::HashMap;

fn main() {
    let port = "1025";
    
    // Works if I reverse these two lines
    let mut data = HashMap::new();
    let port = port.to_string();
    
    data.insert("port", &port);
    
    println!("{:?}", data);
    drop(data); // Ensure `data` is destroyed *before* `port`.
}