diff -r 57b58413dad1 -r df56e6bd37f6 tests/test-stdio.py
--- a/tests/test-stdio.py	Wed Mar 02 17:51:27 2022 -0800
+++ b/tests/test-stdio.py	Tue Mar 01 20:29:03 2022 -0800
@@ -7,6 +7,7 @@
 import contextlib
 import errno
 import os
+import pickle
 import signal
 import subprocess
 import sys
@@ -336,7 +337,7 @@
             proc.stdin.close()
 
         def post_child_check():
-            err = util.pickle.load(err_f)
+            err = pickle.load(err_f)
             self.assertEqual(err.errno, errno.EPIPE)
             self.assertEqual(err.strerror, "Broken pipe")