--- a/tests/test-rebase-newancestor.t	Sat Mar 17 22:30:25 2018 +0900
+++ b/tests/test-rebase-newancestor.t	Tue Apr 03 18:20:10 2018 -0700
@@ -1,6 +1,4 @@
   $ cat >> $HGRCPATH <<EOF
-  > [format]
-  > usegeneraldelta=yes
   > [extensions]
   > rebase=
   > drawdag=$TESTDIR/drawdag.py
changeset 37330	db06c4bb2158
parent 35393	4441705b7111
child 39277	f785073f792c