error[E0308]: mismatched types
  --> $DIR/printing-binder.rs:10:18
   |
LL | fn whatever() -> impl for<'a> Trait<'a> + for<'b> Trait<'b> {}
   |                  ------------------------------------------ the found opaque type
...
LL |     let x: u32 = whatever();
   |            ---   ^^^^^^^^^^ expected `u32`, found opaque type
   |            |
   |            expected due to this
   |
   = note:     expected type `u32`
           found opaque type `impl for<'a> Trait<'a> + for<'b> Trait<'b>`

error[E0308]: mismatched types
  --> $DIR/printing-binder.rs:12:19
   |
LL | fn whatever2() -> impl for<'c> Fn(&'c ()) {
   |                   ----------------------- the found opaque type
...
LL |     let x2: u32 = whatever2();
   |             ---   ^^^^^^^^^^^ expected `u32`, found opaque type
   |             |
   |             expected due to this
   |
   = note:     expected type `u32`
           found opaque type `impl for<'c> Fn(&'c ())`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0308`.