diff -r 924b76a51d18 -r ba9fabaca91b tests/test-evolve.t
--- a/tests/test-evolve.t	Wed Nov 30 11:17:55 2016 +0000
+++ b/tests/test-evolve.t	Wed Nov 23 21:00:42 2016 +0530
@@ -1301,9 +1301,11 @@
   created new head
   $ hg prune '26 + 27'
   abort: cannot prune in the middle of a stack
+  (new unstable changesets are not allowed)
   [255]
   $ hg prune '19::28'
   abort: cannot prune in the middle of a stack
+  (new unstable changesets are not allowed)
   [255]
   $ hg prune '26::'
   3 changesets pruned
@@ -1338,9 +1340,11 @@
 
   $ hg fold --exact "19 + 18"
   abort: cannot fold chain not ending with a head or with branching
+  (new unstable changesets are not allowed)
   [255]
   $ hg fold --exact "18::29"
   abort: cannot fold chain not ending with a head or with branching
+  (new unstable changesets are not allowed)
   [255]
   $ hg fold --exact "19::"
   2 changesets folded
@@ -1483,10 +1487,11 @@
 check that metaedit respects allowunstable
   $ hg metaedit '.^' --config 'experimental.evolution=createmarkers, allnewcommands'
   abort: cannot edit commit information in the middle of a stack
-  (c904da5245b0 will be affected)
+  (c904da5245b0 will become unstable and new unstable changes are not allowed)
   [255]
   $ hg metaedit '18::20' --fold --config 'experimental.evolution=createmarkers, allnewcommands'
   abort: cannot fold chain not ending with a head or with branching
+  (new unstable changesets are not allowed)
   [255]
   $ hg metaedit --user foobar
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved