在我的代码中我创建了

let shared_vec: Arc<Mutex<Vec<user::User>>> = Arc::new(Mutex::new(Vec::new()));

类型为use tokio::sync::Mutex;。
我试图获取锁并将值添加到tokio::spawn内部的列表中，这应该是异步工作的，但我得到了一个错误

value moved here, in previous iteration of loop

here位于tokio::spawn(async move {...的末尾
有人能告诉我解决这个问题的方法吗？这是我的代码

use tokio::{
    io::{AsyncBufReadExt, AsyncWriteExt, BufReader},
    net::TcpListener,
    sync::broadcast,
};

use serde_json::json;
use serde_json::Value;
use tokio::sync::Mutex;
use std::sync::Arc;
mod user;

#[tokio::main]
async fn main() {
    let listener = TcpListener::bind("localhost:8080").await.unwrap();
    let (tx, _rx) = broadcast::channel(10);

    let shared_vec: Arc<Mutex<Vec<user::User>>> = Arc::new(Mutex::new(Vec::new()));

    loop {
        let (mut socket, addr) = listener.accept().await.unwrap();
        
        let tx = tx.clone();
        let mut rx = tx.subscribe();

        tokio::spawn(async move {
            let (reader, mut writer) = socket.split();

            let mut reader = BufReader::new(reader);
            let mut line = String::new();

            loop {
                tokio::select! {
                    result = reader.read_line(&mut line) => {
                        if result.unwrap() == 0 {
                            break;
                        }
                        tx.send((line.clone(), addr)).unwrap();
                        line.clear();
                    }
                    result = rx.recv() => {
                        let (msg, other_addr) = result.unwrap();

                        let json_msg: Value = json!(msg);
                        
                        let mut vec = shared_vec.lock().await;

                        let mut indices_to_update = Vec::new();

                        for (index, usr) in vec.iter().enumerate() {
                            if usr.get_ip() != &addr {
                                indices_to_update.push(index);
                            }
                        }

                        for _index in indices_to_update {
                            let user = user::User::new(json_msg["username"].to_string(), addr);
                            vec.push(user);
                        }

                        if addr == other_addr {
                            writer.write_all(msg.as_bytes()).await.unwrap();
                        }
                    }
                }
            }
        });
    }
}