error: Invalid pallet::storage, Duplicated named generic
  --> $DIR/storage_value_duplicate_named_generic.rs:19:42
   |
19 |     type Foo<T> = StorageValue<Value = u32, Value = u32>;
   |                                             ^^^^^

error: Invalid pallet::storage, Duplicated named generic
  --> $DIR/storage_value_duplicate_named_generic.rs:19:29
   |
19 |     type Foo<T> = StorageValue<Value = u32, Value = u32>;
   |                                ^^^^^
