fix warn

os/src/heap/mod.rs

@@ -18,6 +18,8 @@ pub fn init() {
 pub fn handle_alloc_error(layout: core::alloc::Layout) -> ! {
     panic!("Heap allocation error, layout = {:?}", layout);
 }
+
+#[test_case]
 pub fn heap_test() {
     use alloc::boxed::Box;
     use alloc::vec::Vec;

os/src/main.rs

@@ -48,8 +48,3 @@ fn test_runner(tests: &[&dyn Fn()]) {
         test();
     }
 }
-
-#[test_case]
-fn trivial_assertion() {
-    heap::heap_test();
-}