Why is `self.` required when referencing `value` inside the escaping closure but not strictly inside the non-escaping one (pre-implicit-self relaxation)?
final class Box {
var value = 0
func nonescaping(_ f: () -> Int) { _ = f() }
func escaping(_ f: @escaping () -> Int) {}
func go() {
nonescaping { value } // no self. needed
escaping { self.value } // self. required
}
}