--- a/tests/test-issue1175.t	Mon Jan 06 15:24:36 2020 -0800
+++ b/tests/test-issue1175.t	Fri Dec 27 15:14:19 2019 -0800
@@ -82,7 +82,6 @@
   continue: hg graft --continue
   $ hg graft --continue
   grafting 1:5974126fad84 "b1"
-  warning: can't find ancestor for 'b' copied from 'a'!
   $ hg log -f b -T 'changeset:   {rev}:{node|short}\nsummary:     {desc}\n\n'
   changeset:   3:376d30ccffc0
   summary:     b1