diff --git a/test/helper.py b/test/helper.py
index b067d6e3..91a4773b 100644
--- a/test/helper.py
+++ b/test/helper.py
@@ -66,8 +66,14 @@ def run(command, *, timeout=30):
     logger = logger_from_command(command)
     logger.info('running: %s', command)
 
-    proc = subprocess.run(shlex.split(command), capture_output=True, text=True, check=False,
-                          timeout=timeout)
+    try:
+        proc = subprocess.run(shlex.split(command), capture_output=True, text=True, check=False,
+                              timeout=timeout)
+    except subprocess.TimeoutExpired as e:
+        for line in e.output.splitlines():
+            if line:
+                logger.info('stdout: %s', line)
+        raise
 
     for line in proc.stdout.splitlines():
         if line: