diff --git a/crates/swc_ecma_parser/tests/test262.rs b/crates/swc_ecma_parser/tests/test262.rs
index c313828287f9..1b167648f9e8 100644
--- a/crates/swc_ecma_parser/tests/test262.rs
+++ b/crates/swc_ecma_parser/tests/test262.rs
@@ -305,6 +305,8 @@ fn identity_tests(tests: &mut Vec<TestDescAndFn>) -> Result<(), io::Error> {
                 let expected = p(true);
                 assert_eq!(src, expected);
             }
+
+            Ok(())
         });
     }
 
diff --git a/crates/swc_ecma_transforms_base/tests/fixer_test262.rs b/crates/swc_ecma_transforms_base/tests/fixer_test262.rs
index 078d99f7c93c..38b336c2145f 100644
--- a/crates/swc_ecma_transforms_base/tests/fixer_test262.rs
+++ b/crates/swc_ecma_transforms_base/tests/fixer_test262.rs
@@ -92,7 +92,7 @@ const IGNORED_PASS_TESTS: &[&str] = &[
     "c06df922631aeabc.js",
 ];
 
-fn add_test<F: FnOnce() + Send + 'static>(
+fn add_test<F: FnOnce() -> Result<(), String> + Send + 'static>(
     tests: &mut Vec<TestDescAndFn>,
     name: String,
     ignore: bool,
@@ -258,6 +258,8 @@ fn identity_tests(tests: &mut Vec<TestDescAndFn>) -> Result<(), io::Error> {
                     Err(())
                 })
                 .expect("failed to run test");
+
+                Ok(())
             }
         });
     }