Shared via Rust Playground

playground.rs

trait T<'a> {
    type A;
    type Iter: Iterator<Item=Self::A>;
    fn new() -> Self;

    fn iter(&self) -> Self::Iter;
    
    fn test() where Self: Sized {
        let a = <Self as T<'a>>::new();
        let _ = a.iter().map(|a| a);
    }
}

fn main() {}