error[E0277]: Foo --> $DIR/multiple_notes.rs:14:15 | LL | takes_foo(()); | --------- ^^ Bar | | | required by a bound introduced by this call | = help: the trait `Foo` is not implemented for `()` = note: Baz = note: Boom help: this trait has no implementations, consider adding one --> $DIR/multiple_notes.rs:4:1 | LL | trait Foo {} | ^^^^^^^^^ note: required by a bound in `takes_foo` --> $DIR/multiple_notes.rs:10:22 | LL | fn takes_foo(_: impl Foo) {} | ^^^ required by this bound in `takes_foo` error[E0277]: Bar --> $DIR/multiple_notes.rs:16:15 | LL | takes_bar(()); | --------- ^^ Foo | | | required by a bound introduced by this call | = help: the trait `Bar` is not implemented for `()` = note: Baz = note: Baz2 help: this trait has no implementations, consider adding one --> $DIR/multiple_notes.rs:8:1 | LL | trait Bar {} | ^^^^^^^^^ note: required by a bound in `takes_bar` --> $DIR/multiple_notes.rs:11:22 | LL | fn takes_bar(_: impl Bar) {} | ^^^ required by this bound in `takes_bar` error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0277`.