diff --git a/bench/utils/__init__.py b/bench/utils/__init__.py
index b61f686e..b9e0cced 100644
--- a/bench/utils/__init__.py
+++ b/bench/utils/__init__.py
@@ -150,12 +150,12 @@ def exec_cmd(cmd, cwd=".", env=None, _raise=True):
 	cwd_info = f"cd {cwd} && " if cwd != "." else ""
 	cmd_log = f"{cwd_info}{cmd}"
 	logger.debug(cmd_log)
-	cmd = split(cmd)
-	return_code = subprocess.call(cmd, cwd=cwd, universal_newlines=True, env=env)
+	spl_cmd = split(cmd)
+	return_code = subprocess.call(spl_cmd, cwd=cwd, universal_newlines=True, env=env)
 	if return_code:
 		logger.warning(f"{cmd_log} executed with exit code {return_code}")
 		if _raise:
-			raise CommandFailedError
+			raise CommandFailedError from subprocess.CalledProcessError(return_code, cmd)
 	return return_code
 
 
diff --git a/bench/utils/bench.py b/bench/utils/bench.py
index 353526d5..3fe7f85b 100644
--- a/bench/utils/bench.py
+++ b/bench/utils/bench.py
@@ -298,6 +298,12 @@ def restart_supervisor_processes(bench_path=".", web_workers=False, _raise=False
 			sudo = "sudo "
 			supervisor_status = get_cmd_output("sudo supervisorctl status", cwd=bench_path)
 
+		if not sudo and (
+			"error: <class 'PermissionError'>, [Errno 13] Permission denied" in supervisor_status
+		):
+			sudo = "sudo "
+			supervisor_status = get_cmd_output("sudo supervisorctl status", cwd=bench_path)
+
 		if web_workers and f"{bench_name}-web:" in supervisor_status:
 			group = f"{bench_name}-web:\t"