error[E0277]: the trait bound `Self: std::cmp::Eq` is not satisfied --> $DIR/wf-trait-default-fn-where-clause.rs:11:5 | LL | / fn bar(&self) where A: Bar { LL | | LL | | // LL | | // Here, Eq ought to be implemented. LL | | } | |_____^ the trait `std::cmp::Eq` is not implemented for `Self` | = help: consider adding a `where Self: std::cmp::Eq` bound note: required by `Bar` --> $DIR/wf-trait-default-fn-where-clause.rs:8:1 | LL | trait Bar { } | ^^^^^^^^^^^^^^^^^^^^^^ error: aborting due to previous error For more information about this error, try `rustc --explain E0277`.