--- a/tests/test-touch.t	Tue Jul 09 17:02:44 2019 +0800
+++ b/tests/test-touch.t	Tue Jul 09 17:08:34 2019 +0800
@@ -186,5 +186,11 @@
   working directory is now at * (glob)
   1 changesets pruned
   $ hg touch 16 --hidden
-  abort: cannot amend merge changesets
-  [255]
+  $ hg glog -r '12+15+17'
+  o    17: merge
+  |\
+  | o  15: ab
+  |
+  @  12: move
+  |
+  ~