diff -r e9ce33c642e8 -r b197e2aba703 mercurial/dispatch.py
--- a/mercurial/dispatch.py	Thu May 05 00:33:38 2016 -0700
+++ b/mercurial/dispatch.py	Thu May 05 00:34:22 2016 -0700
@@ -829,6 +829,8 @@
 
     if cmdoptions.get('insecure', False):
         for ui_ in uis:
+            ui_.insecureconnections = True
+            # TODO remove once consumers are gone.
             ui_.setconfig('web', 'cacerts', '!', '--insecure')
 
     if options['version']: