--- a/tests/test-wireproto.t	Wed Feb 21 17:45:50 2018 +0100
+++ b/tests/test-wireproto.t	Fri Feb 23 11:02:59 2018 +0100
@@ -202,6 +202,7 @@
   $ hg debugpushkey http://localhost:$HGPORT/ obsolete
   abort: HTTP Error 410: won't exchange obsmarkers through pushkey
   [255]
+  $ cat errors.log
   $ hg debugpushkey ssh://user@dummy/server obsolete
   remote: abort: won't exchange obsmarkers through pushkey
   remote: (upgrade your client or server to use the bundle2 protocol)