ansible error from playbook, used git bisect to find when the problem showed up

Bisect Results

git bisect good start: 863b88ba44ac9bb41401d634a2374c7b4d01ff89
git bisect bad start:1c361a99680305097c9b098aeb2413fdfe697064


1a4e6e415ef9fa156aecbd7682d309858542c69b is the first bad commit
commit 1a4e6e415ef9fa156aecbd7682d309858542c69b
Author: Serge van Ginderachter <serge@vanginderachter.be>
Date:   Thu Aug 8 16:21:03 2013 +0200

    Check for ansible_facts in results for with_ tasks

    that loop over a lookup plugin. Fixes #3704 and #3735

playbook.yml

# --- SNIP ---

- name: install common Centos packages
  yum: name={{ item }}
  with_items:
    - man
    - acpid
    - curl
    - git
    - ntp
    - pv
    - vim
    - zsh
    - sudo
    - logrotate
    - fail2ban
    - htop
    - wget
    - cronie
    - libselinux-python
  tags:   
    - packages

# --- SNIP ---

# This fails when running the playbook with the following command:

# ansible-playbook site.yml -i production --tags "packages" -K -c paramiko

# Error Text: 

# Traceback (most recent call last):
#   File "/usr/local/bin/ansible-playbook", line 259, in <module>
#     sys.exit(main(sys.argv[1:]))
#   File "/usr/local/bin/ansible-playbook", line 205, in main
#     pb.run()
#   File "/Library/Python/2.7/site-packages/ansible/playbook/__init__.py", line 258, in run
#     if not self._run_play(play):
#   File "/Library/Python/2.7/site-packages/ansible/playbook/__init__.py", line 566, in _run_play
#     if not self._run_task(play, task, False):
#   File "/Library/Python/2.7/site-packages/ansible/playbook/__init__.py", line 368, in _run_task
#     facts = res.get('ansible_facts', {})
# AttributeError: 'unicode' object has no attribute 'get'