HashMap插入数据前后，value的地址打印不同？

use  std::collections::HashMap;

fn  main() {

    let  mut  scores: HashMap<&str, String> =  HashMap::new();

    let  key: &str  =  "qiul";

    let  value: String  =  String::from("good");

    println!("{:p}", &value);

    scores.insert(key, value);

    let  x  =  scores.get("qiul");

    if  let  Some(s) =  x {

        println!("{:p}", s);

    }

}Copy