diff --git a/build_telemetry.py b/build_telemetry.py
index 668f91f9d..82955ca9f 100755
--- a/build_telemetry.py
+++ b/build_telemetry.py
@@ -154,11 +154,10 @@ def check_auth():
             "cipd auth-info --json-output -",
             text=True,
             shell=True,
+            stderr=subprocess.DEVNULL,
             timeout=3,
         )
     except Exception as e:
-        print("WARNING: depot_tools.build_telemetry: "
-              f"failed to get auth info: {e}")
         return {}
     try:
         return json.loads(out)