Only check macro attributes when checking the crate root.

Author: cjgillot

compiler/rustc_passes/src/check_attr.rs

@@ -1644,11 +1644,11 @@ fn check_invalid_macro_level_attr(tcx: TyCtxt<'_>, attrs: &[Attribute]) {
 fn check_mod_attrs(tcx: TyCtxt<'_>, module_def_id: LocalDefId) {
     let check_attr_visitor = &mut CheckAttrVisitor { tcx };
     tcx.hir().visit_item_likes_in_module(module_def_id, &mut check_attr_visitor.as_deep_visitor());
-    tcx.hir().visit_exported_macros_in_krate(check_attr_visitor);
-    check_invalid_macro_level_attr(tcx, tcx.hir().krate().non_exported_macro_attrs);
     if module_def_id.is_top_level_module() {
         check_attr_visitor.check_attributes(CRATE_HIR_ID, &DUMMY_SP, Target::Mod, None);
         check_invalid_crate_level_attr(tcx, tcx.hir().krate_attrs());
+        tcx.hir().visit_exported_macros_in_krate(check_attr_visitor);
+        check_invalid_macro_level_attr(tcx, tcx.hir().krate().non_exported_macro_attrs);
     }
 }