error: expected one of `)`, `,`, `@`, or `|`, found `[` --> $DIR/pat-lt-bracket-7.rs:5:16 | LL | for Thing(x[]) in foo {} | ^ expected one of `)`, `,`, `@`, or `|` error[E0308]: mismatched types --> $DIR/pat-lt-bracket-7.rs:9:30 | LL | const RECOVERY_WITNESS: () = 0; | ^ expected (), found integer error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0308`.