message: Generate qualified Value in derive
diff: @@ -94,7 +94,7 @@ fn render_attr(x: StarAttr) -> TokenStream {
  heap: &'v starlark::values::Heap,
  ) -> anyhow::Result<starlark::values::Value<'v>> {
  fn inner<'v>(
  - this: Value<'v>,
  + this: starlark::values::Value<'v>,
  #[allow(unused_variables)]
  heap: &'v starlark::values::Heap,
  ) -> anyhow::Result<#return_type> {
  