error[E0107]: method takes 0 generic arguments but 1 generic argument was supplied --> $DIR/issue-101421.rs:10:8 | LL | ().f::<()>(()); | ^------ help: remove these generics | | | expected 0 generic arguments | note: method defined here, with 0 generic parameters --> $DIR/issue-101421.rs:2:8 | LL | fn f(&self, _: ()); | ^ error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0107`.