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`.