diff --git a/tarpc/tests/compile_fail/must_use_request_dispatch.stderr b/tarpc/tests/compile_fail/must_use_request_dispatch.stderr
index f7aa3ea..e652cc8 100644
--- a/tarpc/tests/compile_fail/must_use_request_dispatch.stderr
+++ b/tarpc/tests/compile_fail/must_use_request_dispatch.stderr
@@ -9,3 +9,7 @@ note: the lint level is defined here
    |
 11 |     #[deny(unused_must_use)]
    |            ^^^^^^^^^^^^^^^
+help: use `let _ = ...` to ignore the resulting value
+   |
+13 |         let _ = WorldClient::new(client::Config::default(), client_transport).dispatch;
+   |         +++++++
diff --git a/tarpc/tests/compile_fail/serde_transport/must_use_tcp_connect.stderr b/tarpc/tests/compile_fail/serde_transport/must_use_tcp_connect.stderr
index d3f4eb6..b6e9bde 100644
--- a/tarpc/tests/compile_fail/serde_transport/must_use_tcp_connect.stderr
+++ b/tarpc/tests/compile_fail/serde_transport/must_use_tcp_connect.stderr
@@ -9,3 +9,7 @@ note: the lint level is defined here
   |
 5 |     #[deny(unused_must_use)]
   |            ^^^^^^^^^^^^^^^
+help: use `let _ = ...` to ignore the resulting value
+  |
+7 |         let _ = serde_transport::tcp::connect::<_, (), (), _, _>("0.0.0.0:0", Json::default);
+  |         +++++++
diff --git a/tarpc/tests/compile_fail/tokio/must_use_channel_executor.stderr b/tarpc/tests/compile_fail/tokio/must_use_channel_executor.stderr
index 446f224..d7ca6e3 100644
--- a/tarpc/tests/compile_fail/tokio/must_use_channel_executor.stderr
+++ b/tarpc/tests/compile_fail/tokio/must_use_channel_executor.stderr
@@ -9,3 +9,7 @@ note: the lint level is defined here
    |
 25 |     #[deny(unused_must_use)]
    |            ^^^^^^^^^^^^^^^
+help: use `let _ = ...` to ignore the resulting value
+   |
+27 |         let _ = server.execute(HelloServer.serve());
+   |         +++++++
diff --git a/tarpc/tests/compile_fail/tokio/must_use_server_executor.stderr b/tarpc/tests/compile_fail/tokio/must_use_server_executor.stderr
index 07d4b5a..f0bbb68 100644
--- a/tarpc/tests/compile_fail/tokio/must_use_server_executor.stderr
+++ b/tarpc/tests/compile_fail/tokio/must_use_server_executor.stderr
@@ -9,3 +9,7 @@ note: the lint level is defined here
    |
 26 |     #[deny(unused_must_use)]
    |            ^^^^^^^^^^^^^^^
+help: use `let _ = ...` to ignore the resulting value
+   |
+28 |         let _ = server.execute(HelloServer.serve());
+   |         +++++++