--- a/tests/run-tests.py	Sun Feb 20 13:21:30 2022 -0700
+++ b/tests/run-tests.py	Sun Feb 20 13:22:12 2022 -0700
@@ -1794,9 +1794,7 @@
                 script.append(b'echo %s %d $?\n' % (salt, line))
 
         activetrace = []
-        session = str(uuid.uuid4())
-        if PYTHON3:
-            session = session.encode('ascii')
+        session = str(uuid.uuid4()).encode('ascii')
         hgcatapult = os.getenv('HGTESTCATAPULTSERVERPIPE') or os.getenv(
             'HGCATAPULTSERVERPIPE'
         )