--- a/mercurial/pycompat.py	Sun Oct 06 16:55:18 2019 -0400
+++ b/mercurial/pycompat.py	Sun Oct 06 16:58:55 2019 -0400
@@ -355,6 +355,7 @@
     strurl = identity
     bytesurl = identity
     open = open
+    delattr = delattr
     getattr = getattr
     hasattr = hasattr
     setattr = setattr