error[E0599]: no method named `foo` found for struct `Bar` in the current scope --> $DIR/issue-21659-show-relevant-trait-impls-3.rs:20:8 | LL | struct Bar; | ---------- method `foo` not found for this struct ... LL | f1.foo(1usize); | ^^^ method not found in `Bar` | = help: items from traits can only be used if the trait is implemented and in scope note: `Foo` defines an item `foo`, perhaps you need to implement it --> $DIR/issue-21659-show-relevant-trait-impls-3.rs:1:1 | LL | trait Foo { | ^^^^^^^^^^^^ error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0599`.