//@ edition: 2021 #![feature(effects)] //~ WARN the feature `effects` is incomplete trait MyTrait {} impl MyTrait for i32 { async const fn bar(&self) { //~^ ERROR expected one of `extern` //~| ERROR functions in trait impls cannot be declared const //~| ERROR functions cannot be both `const` and `async` //~| ERROR method `bar` is not a member main8().await; //~^ ERROR cannot find function } } fn main() {}