1 You tried to supply an `Fn`-based type with an incorrect number of arguments
2 than what was expected.
4 Erroneous code example:
7 fn foo<F: Fn()>(x: F) { }
10 // [E0593] closure takes 1 argument but 0 arguments are required
15 You have to provide the same number of arguments as expected by the `Fn`-based
16 type. So to fix the previous example, we need to remove the `y` argument:
19 fn foo<F: Fn()>(x: F) { }