[PATCH] py3: bail on ratcheting tests forward on 3.6.0 and 3.6.1

[Kevin Bullock]

# HG changeset patch
# User Kevin Bullock <kbullock+mercurial at ringworld.org>
# Date 1520023077 18000
#      Fri Mar 02 15:37:57 2018 -0500
# Node ID 71a83808184245c86280ede647e18e6cc7945594
# Parent  dfcf589a4031211a67bab022e0a1b414f364bc39
py3: bail on ratcheting tests forward on 3.6.0 and 3.6.1

diff --git a/contrib/python3-ratchet.py b/contrib/python3-ratchet.py
--- a/contrib/python3-ratchet.py
+++ b/contrib/python3-ratchet.py
@@ -80,8 +80,7 @@ def main(argv=()):
         print('warning: Python 3.6.0 and 3.6.1 have '
               'a bug which breaks Mercurial')
         print('(see https://bugs.python.org/issue29714 for details)')
-        # TODO(augie): uncomment exit when Python 3.6.2 is available
-        # sys.exit(1)
+        sys.exit(1)
 
     rt = subprocess.Popen([opts.python3, 'run-tests.py', '-j', str(opts.j),
                            '--blacklist', opts.working_tests, '--json'])