// edition: 2021 | |
use std::future::Future; | |
use std::pin::Pin; | |
trait MyTrait { | |
async fn foo(&self) -> i32; | |
} | |
impl MyTrait for i32 { | |
fn foo(&self) -> Pin<Box<dyn Future<Output = i32> + '_>> { | |
//~^ ERROR method `foo` should be async | |
Box::pin(async { *self }) | |
} | |
} | |
fn main() {} |