diff --git a/compute_tools/src/http/routes/metrics.rs b/compute_tools/src/http/routes/metrics.rs
index 32c8a294a7..4957faf2d4 100644
--- a/compute_tools/src/http/routes/metrics.rs
+++ b/compute_tools/src/http/routes/metrics.rs
@@ -69,26 +69,12 @@ pub(in crate::http) async fn get_autoscaling_metrics(
         .context("fetching metrics from Postgres metrics service")
         .map_err(|e| JsonResponse::error(StatusCode::INTERNAL_SERVER_ERROR, format!("{e:#}")))?;
 
-    // Check response status
-    let status = resp.status();
-    if status != StatusCode::OK {
-        return Err(JsonResponse::error(
-            status,
-            format!(
-                "Postgres metrics service returned error: {}",
-                status.to_string()
-            ),
-        ));
-    }
-
-    // Build an OK response, with the body forwarded from the response we got.
+    // Build a response that just forwards the response we got.
     let mut response = Response::builder();
-    response = response.status(StatusCode::OK);
+    response = response.status(resp.status());
     if let Some(content_type) = resp.headers().get(CONTENT_TYPE) {
         response = response.header(CONTENT_TYPE, content_type);
     }
-
     let body = tonic::service::AxumBody::from_stream(resp.into_body().into_data_stream());
-
     Ok(response.body(body).unwrap())
 }
diff --git a/compute_tools/src/postgres_metrics_client.rs b/compute_tools/src/postgres_metrics_client.rs
index ef42a01444..c9fd346ec0 100644
--- a/compute_tools/src/postgres_metrics_client.rs
+++ b/compute_tools/src/postgres_metrics_client.rs
@@ -88,8 +88,8 @@ where
 
     // spawn a task to poll the connection and drive the HTTP state
     tokio::spawn(async move {
-        if let Err(e) = connection.await {
-            eprintln!("Error in connection: {}", e);
+        if let Err(err) = connection.await {
+            eprintln!("Error in connection: {err}");
         }
     });
 
diff --git a/pgxn/neon/communicator/src/worker_process/lfc_metrics.rs b/pgxn/neon/communicator/src/worker_process/lfc_metrics.rs
index cb402ddef0..fae9cc745f 100644
--- a/pgxn/neon/communicator/src/worker_process/lfc_metrics.rs
+++ b/pgxn/neon/communicator/src/worker_process/lfc_metrics.rs
@@ -19,7 +19,7 @@ impl LfcMetricsCollector {
                 "lfc_approximate_working_set_size_windows",
                 "Approximate working set size in pages of 8192 bytes",
             ),
-            &[&"duration_seconds"],
+            &["duration_seconds"],
         )
         .unwrap();
 
diff --git a/test_runner/regress/test_lfc_working_set_approximation.py b/test_runner/regress/test_lfc_working_set_approximation.py
index 9637a4b84b..dfb1db8a18 100644
--- a/test_runner/regress/test_lfc_working_set_approximation.py
+++ b/test_runner/regress/test_lfc_working_set_approximation.py
@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 import time
-from logging import debug
 from pathlib import Path
 from typing import TYPE_CHECKING