Getting "argument of type 'NoneType' is not iterable" with -c winrm

[techraf]

I am trying to provision a Windows machine from Mac OS X. When running:

ansible -i inventory winserver -m setup -c winrm -vvv

I get the following error:

No config file found; using defaults
An exception occurred during task execution. The full traceback is:
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/site-packages/ansible-2.0.0-py2.7.egg/ansible/executor/process/worker.py", line 134, in run
    shared_loader_obj,
  File "/usr/local/lib/python2.7/site-packages/ansible-2.0.0-py2.7.egg/ansible/executor/task_executor.py", line 118, in run
    res = self._execute()
  File "/usr/local/lib/python2.7/site-packages/ansible-2.0.0-py2.7.egg/ansible/executor/task_executor.py", line 352, in _execute
    self._connection.set_host_overrides(host=self._host)
  File "/usr/local/lib/python2.7/site-packages/ansible-2.0.0-py2.7.egg/ansible/plugins/connection/winrm.py", line 93, in set_host_overrides
    if '@' in self._winrm_user:
TypeError: argument of type 'NoneType' is not iterable


192.168.20.10 | FAILED! => {
    "failed": true,
    "stdout": ""
}

I ran:

pip install "pywinrm>=0.1.1"

and use the following Vagrantfile:

# -*- mode: ruby -*-

# vi: set ft=ruby :

Vagrant.configure(2) do |windows|
  windows.vm.box = "mwrock/Windows2012R2"
  windows.vm.network "private_network", ip: "192.168.20.10"
  windows.vm.hostname = "winserver"
  windows.vm.guest = :windows
  windows.vm.communicator = "winrm"
end

Am I missing something or came across some bug?

[David O'Brien]

Exactly the same problem here. Happens since I updated to Ansible 2.0 this morning :(