--- a/tests/test-evolve.t	Sun Jul 23 21:20:46 2017 +0200
+++ b/tests/test-evolve.t	Mon Jul 24 01:45:17 2017 +0200
@@ -1280,7 +1280,8 @@
   $ hg up 8dc373be86d9^
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ hg uncommit --all
-  abort: cannot uncommit in the middle of a stack
+  abort: uncommit will orphan 4 descendants
+  (see 'hg help evolution.instability')
   [255]
   $ hg up 8dc373be86d9
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved