error: expected one of `)`, `,`, `@`, or `|`, found `[`
  --> $DIR/pat-lt-bracket-6.rs:5:19
   |
LL |     let Test(&desc[..]) = x;
   |                   ^ expected one of `)`, `,`, `@`, or `|`

error[E0658]: subslice patterns are unstable
  --> $DIR/pat-lt-bracket-6.rs:5:20
   |
LL |     let Test(&desc[..]) = x;
   |                    ^^
   |
   = note: for more information, see https://github.com/rust-lang/rust/issues/62254
   = help: add `#![feature(slice_patterns)]` to the crate attributes to enable

error[E0308]: mismatched types
  --> $DIR/pat-lt-bracket-6.rs:10:30
   |
LL | const RECOVERY_WITNESS: () = 0;
   |                              ^ expected `()`, found integer

error: aborting due to 3 previous errors

Some errors have detailed explanations: E0308, E0658.
For more information about an error, try `rustc --explain E0308`.