error[E0574]: expected struct, variant or union type, found trait `Trait` --> $DIR/issue-18986.rs:18:9 | LL | Trait { x: 42 } => () //~ ERROR expected struct, variant or union type, found trait `Trait` | ^^^^^ not a struct, variant or union type error: aborting due to previous error For more information about this error, try `rustc --explain E0574`.