error: You matched a field with a wildcard pattern. Consider using `..` instead --> $DIR/unneeded_field_pattern.rs:17:15 | 17 | Foo { a: _, b: 0, .. } => {} | ^^^^ | = note: `-D unneeded-field-pattern` implied by `-D warnings` = help: Try with `Foo { b: 0, .. }` error: All the struct fields are matched to a wildcard pattern, consider using `..`. --> $DIR/unneeded_field_pattern.rs:19:9 | 19 | Foo { a: _, b: _, c: _ } => {} | ^^^^^^^^^^^^^^^^^^^^^^^^ | = help: Try with `Foo { .. }` instead error: aborting due to 2 previous errors