error[E0658]: `for<...>` binders for closures are experimental
  --> $DIR/const-generics-closure.rs:6:17
   |
LL |         let _ = for<'a, 'b> |x: &'a &'a Vec<&'b u32>, b: bool| -> &'a Vec<&'b u32> { *x };
   |                 ^^^^^^^^^^^
   |
   = note: see issue #97362 <https://github.com/rust-lang/rust/issues/97362> for more information
   = help: add `#![feature(closure_lifetime_binder)]` to the crate attributes to enable
   = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
   = help: consider removing `for<...>`

error[E0308]: mismatched types
  --> $DIR/const-generics-closure.rs:4:10
   |
LL |       [u8; {
   |  __________^
LL | |
LL | |         let _ = for<'a, 'b> |x: &'a &'a Vec<&'b u32>, b: bool| -> &'a Vec<&'b u32> { *x };
LL | |
LL | |     }],
   | |_____^ expected `usize`, found `()`

error: aborting due to 2 previous errors

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