`CasbinActor<CachedEnforcer>` 未实现特征 `Actor`

如何解决`CasbinActor<CachedEnforcer>` 未实现特征 `Actor`

error[E0277]: the trait bound `casbinActor<CachedEnforcer>: Actor` is not satisfied
  --> actix-middleware-example/src/api/user.rs:34:12
   |
34 |     actor: web::Data<Addr<casbinActor<CachedEnforcer>>>,|            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Actor` is not implemented for `casbinActor<CachedEnforcer>`
   | 
  ::: /home/samarpan/.cargo/registry/src/github.com-1ecc6299db9ec823/actix-0.11.1/src/address/mod.rs:77:20
   |
77 | pub struct Addr<A: Actor> {
   |                    ----- required by this bound in `Addr`

error[E0277]: the trait bound `casbinActor<CachedEnforcer>: Actor` is not satisfied
  --> actix-middleware-example/src/services/account_service.rs:24:12
   |
24 |     actor: web::Data<Addr<casbinActor<CachedEnforcer>>>,|            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Actor` is not implemented for `casbinActor<CachedEnforcer>`
   | 
  ::: /home/samarpan/.cargo/registry/src/github.com-1ecc6299db9ec823/actix-0.11.1/src/address/mod.rs:77:20
   |
77 | pub struct Addr<A: Actor> {
   |                    ----- required by this bound in `Addr`

error: aborting due to 2 prevIoUs errors

For more information about this error,try `rustc --explain E0277`.
error: Could not compile `actix-middleware-example`

To learn more,run the command again with --verbose.

这是我运行 cargo build 时的错误。

为 casbinActor 实现了 Actor 特征。

pub struct casbinActor<T: IEnforcer + 'static> {
    pub enforcer: Option<Arc<RwLock<T>>>,}

impl<T: IEnforcer + 'static> casbinActor<T> {
    pub async fn new<M: TryIntoModel,A: TryIntoAdapter>(
        m: M,a: A,) -> Result<Addr<casbinActor<T>>> {
        let enforcer = T::new(m,a).await?;
        Ok(Supervisor::start(|_| casbinActor {
            enforcer: Some(Arc::new(RwLock::new(enforcer))),}))
    }

    pub fn set_enforcer(e: Arc<RwLock<T>>) -> Result<casbinActor<T>> {
        Ok(casbinActor { enforcer: Some(e) })
    }

    pub fn get_enforcer(&mut self) -> Option<Arc<RwLock<T>>> {
        self.enforcer.as_ref().map(|x| Arc::clone(x))
    }
}

impl<T: IEnforcer + 'static> Actor for casbinActor<T> {
    type Context = Context<Self>;
}

修复是什么？我认为问题可能是因为 casbinActor 在 Actor 为 T 时实现了一个特征 IEnforcer。也许必须为 CachedEnforcer 做一些类似的事情，但我到底应该在哪里添加代码来解决这个问题？

这是回购 - https://github.com/casbin-rs/examples/tree/master/actix-middleware-example