src/test/ui/confuse-field-and-method/issue-32128.rs

struct Example {
    example: Box<dyn Fn(i32) -> i32>
}

fn main() {
    let demo = Example {
        example: Box::new(|x| {
            x + 1
        })
    };

    demo.example(1);
    //~^ ERROR no method named `example`
    // (demo.example)(1);
}