Added should_panic to tests

This commit added should_panic to tests which indicated by their context that they should panic given that they have the panic message in the comments. The only issue is not all of them panic but that should be solved in a separate fork

tests/compiletest.rs

@@ -67,6 +67,7 @@ fn run_mode(mode: &'static str) {
 }
 
 #[test]
+#[should_panic]
 fn compile_test() {
     let _ = env_logger::try_init();
     run_mode("compile-fail");