error: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions
  --> $DIR/type-param-defaults.rs:6:16
   |
LL |     type Assoc<T = u32>;
   |                ^^^^^^^

error: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions
  --> $DIR/type-param-defaults.rs:11:16
   |
LL |     type Assoc<T = u32> = u64;
   |                ^^^^^^^

error: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions
  --> $DIR/type-param-defaults.rs:16:16
   |
LL |     type Assoc<T = u32> = T;
   |                ^^^^^^^

error: aborting due to 3 previous errors