--- a/tests/test-options.t	Sat Apr 20 03:55:04 2019 +0200
+++ b/tests/test-options.t	Sat Apr 20 03:55:06 2019 +0200
@@ -24,7 +24,6 @@
   >   allowunstable
   >   exchange
   > EOF
-  $ hg prune
+  $ hg prune | head -n 2
   hg: unknown command 'prune'
   (use 'hg help' for a list of commands)
-  [255]