// edition:2021 #![feature(async_fn_in_trait)] //~^ WARN the feature `async_fn_in_trait` is incomplete trait MyTrait { async fn bar(&abc self); //~^ ERROR expected identifier, found keyword `self` //~| ERROR expected one of `:`, `@`, or `|`, found keyword `self` } impl MyTrait for () { async fn bar(&self) {} } fn main() {}