src/test/ui/closures/print/closure-print-generic-2.rs

mod mod1 {
    pub fn f<T: std::fmt::Display>(t: T) {
        let x = 20;

        let c = || println!("{} {}", t, x);
        let c1: () = c;
        //~^ ERROR mismatched types
    }
}

fn main() {
    mod1::f(5i32);
}