mercurial/wireproto.py

--- a/mercurial/wireproto.py	Sat Jan 10 23:18:11 2015 +0900
+++ b/mercurial/wireproto.py	Wed Jan 07 00:07:29 2015 -0800
@@ -172,7 +172,11 @@
     return []
 
 def encodelist(l, sep=' '):
-    return sep.join(map(hex, l))
+    try:
+        return sep.join(map(hex, l))
+    except TypeError:
+        print l
+        raise
 
 # batched call argument encoding