我有一个错误，我不明白当我编译我的 rust 代码。

error: lifetime may not live long enough
  --> src\tls_rustls.rs:88:9
   |
51 | impl<'a> Tls<Certificate> for EstClientRustls<'a> {
   |      -- lifetime `'a` defined here
52 |     fn open(&mut self, host: &str, port: i32, chain: &Vec<Certificate>) {
   |             - let's call the lifetime of this reference `'1`
...
88 |         self.tls = Some(tls);
   |         ^^^^^^^^^^^^^^^^^^^^ assignment requires that `'1` must outlive `'a`

产生错误的程式码为：

pub trait Tls<T> {
    fn open(&mut self, host: &str, port: i32, chain: &Vec<T>);
    fn close(&self);
}

pub struct EstClientRustls<'a> {
    client: Option<ClientConnection>,
    sock: Option<TcpStream>,
    tls: Option<Stream<'a, ClientConnection, TcpStream>>
}

impl<'a> Tls<Certificate> for EstClientRustls<'a> {

    fn open(&mut self, host: &str, port: i32, chain: &Vec<Certificate>) {
      let client = ClientConnection::new(rc_config, tls_server_name).unwrap();
      let sock = TcpStream::connect(host_port).unwrap();

      self.client = Some(client);
      self.sock = Some(sock);

      let tls = Stream::new(
        self.client.as_mut().unwrap(),
        self.sock.as_mut().unwrap());

      self.tls = Some(tls);
    }
}

任何人都可以帮助我？技术说明：rustc 1.64.0（a55 dd 71 d5 2022年9月19日）库：

• 铁 rust 色-〉“0.20.7”
• “1.0.1”中的字符串
• x509-解析器-〉“0.14.0”