struct Foo { x: isize, } impl Foo { fn hi(&self) -> bool { true } } fn main() { while || Foo { //~ ERROR expected value, found struct `Foo` x: 3 //~ ERROR expected type, found `3` }.hi() { //~ ERROR expected one of `.`, `;`, `?`, `}`, or an operator, found `{` //~| ERROR no method named `hi` found for type `()` in the current scope println!("yo"); } }