error[E0201]: duplicate definitions with name `foo`: --> $DIR/duplicate-definition-inside-trait-impl.rs:19:5 | LL | fn foo(&self) -> u32 { 0 } | -------------------------- item in trait ... LL | reuse to_reuse::foo { self } | ---------------------------- previous definition here LL | reuse Trait::foo; | ^^^^^^^^^^^^^^^^^ duplicate definition error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0201`.