JSON stack trace - adding PPA with Ansible

Add PPA play.yml

- name: Add MySQL 5.6 PPA
  command: '/usr/bin/add-apt-repository -y ppa:ondrej/mysql-5.6'

JSON error

TASK: [mysql | Add MySQL 5.6 PPA] *********************************************
failed to parse json:     changed = True
  File "/root/.ansible/tmp/ansible-1387085726.11-159416578243861/command", line 996, in exit_json
    print self.jsonify(kwargs)
  File "/root/.ansible/tmp/ansible-1387085726.11-159416578243861/command", line 986, in jsonify
    return json.dumps(data)
  File "/usr/lib/python2.7/json/__init__.py", line 243, in dumps
    return _default_encoder.encode(obj)
  File "/usr/lib/python2.7/json/encoder.py", line 207, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/usr/lib/python2.7/json/encoder.py", line 270, in iterencode
    return _iterencode(o, 0)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xfd in position 281: invalid start byte

fatal: [ansibledb1] => Traceback (most recent call last):
  File "/Library/Python/2.7/site-packages/ansible/runner/__init__.py", line 394, in _executor
    exec_rc = self._executor_internal(host, new_stdin)
  File "/Library/Python/2.7/site-packages/ansible/runner/__init__.py", line 485, in _executor_internal
    return self._executor_internal_inner(host, self.module_name, self.module_args, inject, port, complex_args=complex_args)
  File "/Library/Python/2.7/site-packages/ansible/runner/__init__.py", line 685, in _executor_internal_inner
    result = handler.run(conn, tmp, module_name, module_args, inject, complex_args)
  File "/Library/Python/2.7/site-packages/ansible/runner/action_plugins/normal.py", line 54, in run
    return self.runner._execute_module(conn, tmp, module_name, module_args, inject=inject, complex_args=complex_args)
  File "/Library/Python/2.7/site-packages/ansible/runner/__init__.py", line 369, in _execute_module
    data = utils.parse_json(res['stdout'])
  File "/Library/Python/2.7/site-packages/ansible/utils/__init__.py", line 306, in parse_json
    tokens = shlex.split(data)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shlex.py", line 279, in split
    return list(lex)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shlex.py", line 269, in next
    token = self.get_token()
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shlex.py", line 96, in get_token
    raw = self.read_token()
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shlex.py", line 172, in read_token
    raise ValueError, "No closing quotation"
ValueError: No closing quotation


FATAL: all hosts have already failed -- aborting