error[E0277]: `A` doesn't implement `std::fmt::Display` --> $DIR/remap-path-prefix-diagnostics.rs:LL:COL | LL | impl r#trait::Trait for A {} | ^ unsatisfied trait bound | help: the trait `std::fmt::Display` is not implemented for `A` --> $DIR/remap-path-prefix-diagnostics.rs:LL:COL | LL | struct A; | ^^^^^^^^ note: required by a bound in `Trait` --> $DIR/auxiliary/trait-macro.rs:LL:COL | LL | pub trait Trait: std::fmt::Display {} | ^^^^^^^^^^^^^^^^^ required by this bound in `Trait` error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0277`.