error: unknown attribute --> $DIR/unknown_attribute.rs:5:16 | 5 | #[ibuilder(wibble_monster = 42)] | ^^^^^^^^^^^^^^ error: unknown attribute --> $DIR/unknown_attribute.rs:10:12 | 10 | #[ibuilder(wibble_monster = 42)] | ^^^^^^^^^^^^^^ error: unknown attribute --> $DIR/unknown_attribute.rs:16:12 | 16 | #[ibuilder(wibble_monster = 42)] | ^^^^^^^^^^^^^^ error: unknown attribute --> $DIR/unknown_attribute.rs:23:16 | 23 | #[ibuilder(wibble_monster = 42)] | ^^^^^^^^^^^^^^