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error[E0049]: associated type `Baz` has 1 type parameter but its trait declaration has 0 type parameters
  --> $DIR/impl-trait-in-type-alias-with-bad-substs.rs:19:14
   |
LL |     type Baz<'a>;
   |              -- expected 0 type parameters
...
LL |     type Baz<T> = impl Sized;
   |              ^ found 1 type parameter

error: unconstrained opaque type
  --> $DIR/impl-trait-in-type-alias-with-bad-substs.rs:19:19
   |
LL |     type Baz<T> = impl Sized;
   |                   ^^^^^^^^^^
   |
   = note: `Baz` must be used in combination with a concrete type within the same impl

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0049`.