Add more logging. Useful to understand `git try` slowness.

trychange.py

 #!/usr/bin/python
 # Copyright (c) 2009 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Client-side script to send a try job to the try server. It communicates to
 the try server by either writting to a svn repository or by directly connecting
 to the server by HTTP.
 """
 
@@ skipping 318 matching lines @@
 
   logging.info('Sending by HTTP')
   logging.info(description)
   logging.info(url)
   if options.dry_run:
     print options.diff
     return
   logging.info(options.diff)
 
   try:
+    logging.info('Opening connection...')
     connection = urllib.urlopen(url, urllib.urlencode(values), proxies=proxies)
+    logging.info('Done')
   except IOError, e:
     logging.info(str(e))
     if (values.get('bot') and len(e.args) > 2 and
         e.args[2] == 'got a bad status line'):
       raise NoTryServerAccess('%s is unaccessible. Bad --bot argument?' % url)
     else:
       raise NoTryServerAccess('%s is unaccessible. Reason: %s' % (url,
                                                                   str(e.args)))
   if not connection:
     raise NoTryServerAccess('%s is unaccessible.' % url)
+  logging.info('Reading response...')
   response = connection.read()
+  logging.info('Done')
   if response != 'OK':
     raise NoTryServerAccess('%s is unaccessible. Got:\n%s' % (url, response))
 
 
 def _SendChangeSVN(options):
   """Send a change to the try server by committing a diff file on a subversion
   server."""
   if not options.svn_repo:
     raise NoTryServerAccess('Please use the --svn_repo option to specify the'
                             ' try server svn repository to connect to.')
@@ skipping 404 matching lines @@
     print >> sys.stderr, e
     return 1
   except gclient_utils.Error, e:
     print >> sys.stderr, e
     return 1
   return 0
 
 
 if __name__ == "__main__":
   sys.exit(TryChange(None, [], False))