自己在使用 #[tokio::test] 在 VSCode + rust-analyzer 时 总是出现

failed to write request: 管道正在被关闭。 (os error 232)rust-analyzermacro-error

测试代码是

#[tokio::test]
async fn time_out(){
     use tokio::time::sleep;
    // use futures::future::{self,AbortHandle,Abortable};
    
    let a = || async{ 
        sleep(Duration::from_secs(2)).await;
        println!("{}","run a")
    };
    let _b = || { println!("{}","run b")};

    // let (abort_handle,abort_registration) = AbortHandle::new_pair();

    // let ca = Abortable::new(a,abort_registration);
    // let cb = Abortable::new(b,abort_registration);
    // let r = tokio::spawn(a);

    // let re = future::join(r).await;
    // let c = r.await.unwrap();
    let c = a();
    drop(c);
    // c.await;
    println!("{}","同步");
    loop {
        true;
    }
}

依赖

[package]
name = "monitor"
version = "0.0.1"
edition = "2018"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
tokio = { version = "1.10.1", features = ["full"] }

# These dependencies are only used for the 'http_bench_*_ops' examples.
[dev-dependencies]
# tokio = { version = "1.10.1", features = ["full"] }

能解决吗？