Rust 字段类型为Boxed的 struct 的生存期必须超过static

我有一个最小的例子:

use std::{future::Future, pin::Pin, thread::JoinHandle, fmt::Debug};

use tokio::runtime::Runtime;

struct Callback<E> {
    f: Box<dyn Fn() -> Pin<Box<dyn Future<Output = Result<(), E>> + Send + Sync>> + Send + Sync>,
}

trait Provider {
    fn setup(&self) -> JoinHandle<()>;
}

enum Foo {
    A,
    B
}

trait IntoFoo {
    fn into_foo(&self) -> Foo;
}

impl<E: Debug + IntoFoo> Provider for Callback<E> {
    fn setup(&self) -> JoinHandle<()> {
        std::thread::spawn(move || {
            // Running async function sycnhronously within another thread.
            let rt = Runtime::new().unwrap();
            rt.block_on(handle(Box::new(move || (self.f)())))
              .expect("request loop failed")
          })
    }
}

async fn handle<E: Debug + IntoFoo + 'static>( callback_fn: Box<dyn Fn() -> Pin<Box<dyn Future<Output = Result<(), E>> + Send + Sync>> + Send + Sync>) -> Result<(), E> {
    perform(Box::new(move || (callback_fn)())).await
}

pub async fn perform<
  E: Debug + IntoFoo>(
  op: Box<dyn Fn() -> Pin<Box<dyn Future<Output = Result<(), E>> + Send + Sync>> + Send + Sync>,
) -> Result<(), E> {
    (op)().await
}

这是一些真实代码的简化版本，我基本上必须在 struct 中传递一个martec回调.这个回调通过多个函数传递.其中一个线程在新生成的线程中调用该函数.

当调用handle时，我得到的错误是在线程派生代码中.

错误是:

error: lifetime may not live long enough
  --> src/indexer/callback.rs:41:41
   |
27 |   fn bootstrap(&self, input: StageReceiver) -> BootstrapResult {
   |                - let's call the lifetime of this reference `'1`
...
41 |         rt.block_on(handle_event(input, Box::new(move |ev: &Event| (self.f)(ev)), &retry_policy, utils))
   |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cast requires that `'1` must outlive `'static`

我应该如何协调这件事？可以更改 struct 字段类型和任何类似的内容.然而，我必须注意:该函数必须能够被多次调用(它可能在handle中的循环中).

其他一些线程建议在Box中传递异步回调，它们的结果是一个固定的盒装特征对象.这就是为什么我try 了这个系统.