我需要创建一个线程并将线程连接句柄存储在结构体中，但是我得到了错误：

use std::sync::atomic::{AtomicBool, Ordering};
use std::thread;

pub struct NetworkReceiver {
    terminate_flag: AtomicBool,
    join_handle: Option<thread::JoinHandle<()>>,
}

impl NetworkReceiver {
    pub fn new() -> NetworkReceiver {
        NetworkReceiver {
            terminate_flag: AtomicBool::new(false),
            join_handle: None,
        }
    }

    pub fn start(&mut self) {
        self.join_handle = Some(thread::spawn(|| self.run()));
    }

    pub fn run(&mut self) {
        while !self.terminate_flag.load(Ordering::Relaxed) {
            // ...
        }
    }

    pub fn terminate(&mut self) {
        self.terminate_flag.store(true, Ordering::Relaxed);
    }
}

error[E0506]: cannot assign to `self.join_handle` because it is borrowed
  --> src/main.rs:18:9
   |
18 |         self.join_handle = Some(thread::spawn(|| self.run()));
   |         ^^^^^^^^^^^^^^^^        ----------------------------
   |         |                       |             |  |
   |         |                       |             |  borrow occurs due to use in closure
   |         |                       |             borrow of `self.join_handle` occurs here
   |         |                       argument requires that `*self` is borrowed for `'static`
   |         assignment to borrowed `self.join_handle` occurs here

error[E0521]: borrowed data escapes outside of associated function
  --> src/main.rs:18:33
   |
17 |     pub fn start(&mut self) {
   |                  ---------
   |                  |
   |                  `self` is a reference that is only valid in the associated function body
   |                  let's call the lifetime of this reference `'1`
18 |         self.join_handle = Some(thread::spawn(|| self.run()));
   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |                                 |
   |                                 `self` escapes the associated function body here
   |                                 argument requires that `'1` must outlive `'static`