diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -1346,7 +1346,7 @@ def dispatch(args):
         if hasattr(inst, "code"):
             u.warn("abort: %s\n" % inst)
         elif hasattr(inst, "reason"):
-            u.warn("abort: error %d: %s\n" % (inst.reason[0], inst.reason[1]))
+            u.warn("abort: error: %s\n" % inst.reason[1])
         elif hasattr(inst, "args") and inst[0] == errno.EPIPE:
             if u.debugflag: u.warn("broken pipe\n")
         else: