I've got this trace while testing vagrant-berkshelf with the last vagrant (1.7.1):
berks -v: 3.2.1
vagrant-berkshelf (4.0.1)
vagrant-chef-zero (0.7.1)
vagrant-omnibus (1.4.1)
`ensure in with_provision_berkshelf_config': undefined method `close' for nil:NilClass (NoMethodError)
from /Users/charliemordant/.vagrant.d/gems/gems/vagrant-berkshelf-4.0.1/lib/vagrant-berkshelf/action/upload.rb:62:in `with_provision_berkshelf_config'
from /Users/charliemordant/.vagrant.d/gems/gems/vagrant-berkshelf-4.0.1/lib/vagrant-berkshelf/action/upload.rb:85:in `block in upload'
from /Users/charliemordant/.vagrant.d/gems/gems/vagrant-berkshelf-4.0.1/lib/vagrant-berkshelf/action/upload.rb:84:in `each'
from /Users/charliemordant/.vagrant.d/gems/gems/vagrant-berkshelf-4.0.1/lib/vagrant-berkshelf/action/upload.rb:84:in `upload'
from /Users/charliemordant/.vagrant.d/gems/gems/vagrant-berkshelf-4.0.1/lib/vagrant-berkshelf/action/upload.rb:26:in `call'
from /opt/vagrant/embedded/gems/gems/vagrant-1.7.1/lib/vagrant/action/warden.rb:34:in `call'
I've got this trace while testing vagrant-berkshelf with the last vagrant (1.7.1):