diff --git a/libs/crosstarget-utils/src/common.rs b/libs/crosstarget-utils/src/common.rs
index 3afce64c6714..92a1d5094e89 100644
--- a/libs/crosstarget-utils/src/common.rs
+++ b/libs/crosstarget-utils/src/common.rs
@@ -1,13 +1,7 @@
 use std::fmt::Display;
 
 #[derive(Debug)]
-pub struct SpawnError {}
-
-impl SpawnError {
-    pub fn new() -> Self {
-        SpawnError {}
-    }
-}
+pub struct SpawnError;
 
 impl Display for SpawnError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
@@ -18,13 +12,7 @@ impl Display for SpawnError {
 impl std::error::Error for SpawnError {}
 
 #[derive(Debug)]
-pub struct TimeoutError {}
-
-impl TimeoutError {
-    pub fn new() -> Self {
-        TimeoutError {}
-    }
-}
+pub struct TimeoutError;
 
 impl Display for TimeoutError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
diff --git a/libs/crosstarget-utils/src/native/spawn.rs b/libs/crosstarget-utils/src/native/spawn.rs
index b0d541258c2a..8a8360c580fa 100644
--- a/libs/crosstarget-utils/src/native/spawn.rs
+++ b/libs/crosstarget-utils/src/native/spawn.rs
@@ -7,5 +7,5 @@ where
     F: Future + 'static + Send,
     F::Output: Send + 'static,
 {
-    tokio::spawn(future).await.map_err(|_| SpawnError::new())
+    tokio::spawn(future).await.map_err(|_| SpawnError)
 }
diff --git a/libs/crosstarget-utils/src/native/time.rs b/libs/crosstarget-utils/src/native/time.rs
index e222e08cf628..3b154a27565c 100644
--- a/libs/crosstarget-utils/src/native/time.rs
+++ b/libs/crosstarget-utils/src/native/time.rs
@@ -21,7 +21,7 @@ impl ElapsedTimeCounter {
     }
 }
 
-pub async fn sleep(duration: Duration) -> () {
+pub async fn sleep(duration: Duration) {
     tokio::time::sleep(duration).await
 }
 
@@ -31,5 +31,5 @@ where
 {
     let result = tokio::time::timeout(duration, future).await;
 
-    result.map_err(|_| TimeoutError::new())
+    result.map_err(|_| TimeoutError)
 }
diff --git a/libs/crosstarget-utils/src/wasm/time.rs b/libs/crosstarget-utils/src/wasm/time.rs
index e983aa5678a6..6f14ac001ee8 100644
--- a/libs/crosstarget-utils/src/wasm/time.rs
+++ b/libs/crosstarget-utils/src/wasm/time.rs
@@ -50,7 +50,7 @@ where
 {
     tokio::select! {
         result = future => Ok(result),
-        _ = sleep(duration) => Err(TimeoutError::new())
+        _ = sleep(duration) => Err(TimeoutError)
     }
 }
 
diff --git a/query-engine/connector-test-kit-rs/query-tests-setup/src/connector_tag/js/external_process.rs b/query-engine/connector-test-kit-rs/query-tests-setup/src/connector_tag/js/external_process.rs
index 6e7e9ae81b8a..912a5e6d8abf 100644
--- a/query-engine/connector-test-kit-rs/query-tests-setup/src/connector_tag/js/external_process.rs
+++ b/query-engine/connector-test-kit-rs/query-tests-setup/src/connector_tag/js/external_process.rs
@@ -140,7 +140,7 @@ impl Display for ExecutorProcessDiedError {
 
 impl StdError for ExecutorProcessDiedError {}
 
-pub(super) static EXTERNAL_PROCESS: Lazy<RestartableExecutorProcess> = Lazy::new(|| RestartableExecutorProcess::new());
+pub(super) static EXTERNAL_PROCESS: Lazy<RestartableExecutorProcess> = Lazy::new(RestartableExecutorProcess::new);
 
 type ReqImpl = (
     jsonrpc_core::MethodCall,
@@ -215,7 +215,7 @@ fn start_rpc_thread(mut receiver: mpsc::Receiver<ReqImpl>) -> Result<()> {
                             {
                                 tracing::error!("Error when reading from child node process. Process might have exited. Restarting...");
                                 if let Some((_, sender)) = last_pending_request.take() {
-                                    let _ = sender.send(Err(Box::new(ExecutorProcessDiedError))).unwrap();
+                                    sender.send(Err(Box::new(ExecutorProcessDiedError))).unwrap();
                                 }
                                 EXTERNAL_PROCESS.restart().await;
                                 break;