pty errors

2014-02-12 13:06:50,025 [salt.utils.cloud ][ERROR   ] Failed to execute command '/tmp/.saltcloud/deploy.sh -c /tmp/.saltcloud -D git 3a894d760699ab155bc63a3e35e6730f87cc7d8c': Failed to spawn the VT. Er
ror: out of pty devices
Traceback (most recent call last):
  File "/home/stackdio/.virtualenvs/stackdio/src/salt/salt/utils/cloud.py", line 1235, in root_cmd
    stream_stderr=kwargs.get('display_ssh_output', True)
  File "/home/stackdio/.virtualenvs/stackdio/src/salt/salt/utils/vt.py", line 207, in __init__
    'Failed to spawn the VT. Error: {0}'.format(err)
TerminalException: Failed to spawn the VT. Error: out of pty devices
2014-02-12 13:06:50,026 [salt.cloud       ][ERROR   ] Failed to deploy 'test-spot-dn-126'. Error: Executing the command '/tmp/.saltcloud/deploy.sh -c /tmp/.saltcloud -D git 3a894d760699ab155bc63a3e35e6730f87cc7d8c' failed
Traceback (most recent call last):
  File "/home/stackdio/.virtualenvs/stackdio/src/salt/salt/cloud/__init__.py", line 1699, in create_multiprocessing
    local_master=parallel_data['local_master']
  File "/home/stackdio/.virtualenvs/stackdio/src/salt/salt/cloud/__init__.py", line 854, in create
    output = self.clouds[func](vm_)
  File "/home/stackdio/.virtualenvs/stackdio/src/salt/salt/cloud/clouds/ec2.py", line 1576, in create
    deployed = salt.utils.cloud.deploy_script(**deploy_kwargs)
  File "/home/stackdio/.virtualenvs/stackdio/src/salt/salt/utils/cloud.py", line 864, in deploy_script
    deploy_command
SaltCloudSystemExit: Executing the command '/tmp/.saltcloud/deploy.sh -c /tmp/.saltcloud -D git 3a894d760699ab155bc63a3e35e6730f87cc7d8c' failed