error[E0223]: ambiguous associated type --> $DIR/issue-103202.rs:4:17 | LL | fn f(self: &S::x) {} | ^^^^ | help: if there were a trait named `Example` with associated type `x` implemented for `S`, you could use the fully-qualified path | LL | fn f(self: &::x) {} | ~~~~~~~~~~~~~~~~~ error: aborting due to previous error For more information about this error, try `rustc --explain E0223`.