diff -r c2e284cee333 -r eef9a2d67051 mercurial/crecord.py
--- a/mercurial/crecord.py	Sun Oct 06 13:17:19 2019 -0400
+++ b/mercurial/crecord.py	Sun Oct 06 13:28:56 2019 -0400
@@ -16,6 +16,7 @@
 import signal
 
 from .i18n import _
+from .pycompat import open
 from . import (
     encoding,
     error,