tests/ui/resolve/issue-12796.rs - third_party/github.com/rust-lang/rust - Git at Google

 trait Trait {
     fn outer(&self) {
         fn inner(_: &Self) {
             //~^ ERROR can't use `Self` from outer item
         }
     }
 }

 fn main() { }
	trait Trait {
	fn outer(&self) {
	fn inner(_: &Self) {
	//~^ ERROR can't use `Self` from outer item
	}
	}
	}

	fn main() { }