struct Planet<T> {
    i: T
}

trait Spinner<T> {
    fn spin(&self, value: T);
}

impl<T> Spinner<T> for Planet<T> {
    fn spin(&self, _value: T) {}
}


// foo2 fails: Due to lifetime of local variable being less than 'a

fn foo2<'a>(t: &'a Spinner<&'a i32>) {
    let x: i32 = 10;
    t.spin(&x);
}


// foo1 passes: But here also the lifetime of local variable is less than 'a?

fn foo1<'a>(t: &'a Planet<&'a i32>) {
    let x: i32 = 10;
    t.spin(&x);
}

fn main() {}