diff --git a/src/main.rs b/src/main.rs
index ac27740ffe..747152a966 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -17,7 +17,7 @@ fn main() -> Result<(), Error> {
         walreceiver::thread_main();
     });
 
-    handler.join();     // never returns.
+    let _unused = handler.join();     // never returns.
 
     Ok(())
 }
diff --git a/src/walreceiver.rs b/src/walreceiver.rs
index 3eb6d68f5f..e58527de44 100644
--- a/src/walreceiver.rs
+++ b/src/walreceiver.rs
@@ -21,7 +21,7 @@ pub fn thread_main() {
     println!("Starting WAL receiver");
 
     runtime.block_on( async {
-        walreceiver_main().await;
+        let _unused = walreceiver_main().await;
     });
 }