diff --git a/libs/binder/rust/tests/serialization.rs b/libs/binder/rust/tests/serialization.rs
index 2ae13f4..2bf3d03 100644
--- a/libs/binder/rust/tests/serialization.rs
+++ b/libs/binder/rust/tests/serialization.rs
@@ -25,7 +25,6 @@
 use binder::parcel::ParcelFileDescriptor;
 
 use std::ffi::{c_void, CStr, CString};
-use std::panic::{self, AssertUnwindSafe};
 use std::sync::Once;
 
 #[allow(
@@ -73,22 +72,9 @@
 
 impl ReadParcelTest for () {}
 
-fn on_transact(
-    _service: &dyn ReadParcelTest,
-    code: TransactionCode,
-    parcel: &Parcel,
-    reply: &mut Parcel,
-) -> Result<()> {
-    panic::catch_unwind(AssertUnwindSafe(|| transact_inner(code, parcel, reply))).unwrap_or_else(
-        |e| {
-            eprintln!("Failure in Rust: {:?}", e.downcast_ref::<String>());
-            Err(StatusCode::FAILED_TRANSACTION)
-        },
-    )
-}
-
 #[allow(clippy::float_cmp)]
-fn transact_inner(code: TransactionCode, parcel: &Parcel, reply: &mut Parcel) -> Result<()> {
+fn on_transact(_service: &dyn ReadParcelTest, code: TransactionCode,
+               parcel: &Parcel, reply: &mut Parcel) -> Result<()> {
     match code {
         bindings::Transaction_TEST_BOOL => {
             assert_eq!(parcel.read::<bool>()?, true);
@@ -296,7 +282,7 @@
             ))?;
         }
         bindings::Transaction_TEST_FAIL => {
-            panic!("Testing expected failure");
+            return Err(StatusCode::FAILED_TRANSACTION)
         }
         _ => return Err(StatusCode::UNKNOWN_TRANSACTION),
     }