Ubuntu版本：Ubuntu 14.04.1 LTS
我在Laravel homestead document上做了所有事情，当我输入homestead up时，它出来了
/opt/vagrant/embedded/gems/gems/vagrant-1.6.5/lib/vagrant/environment.rb:763:in `chmod': Operation not permitted - /home/chan/.vagrant.d/insecure_private_key (Errno::EPERM)
from /opt/vagrant/embedded/gems/gems/vagrant-1.6.5/lib/vagrant/environment.rb:763:in `chmod'
from /opt/vagrant/embedded/gems/gems/vagrant-1.6.5/lib/vagrant/environment.rb:763:in `copy_insecure_private_key'
from /opt/vagrant/embedded/gems/gems/vagrant-1.6.5/lib/vagrant/environment.rb:171:in `initialize'
from /opt/vagrant/bin/../embedded/gems/gems/vagrant-1.6.5/bin/vagrant:165:in `new'
from /opt/vagrant/bin/../embedded/gems/gems/vagrant-1.6.5/bin/vagrant:165:in `<main>'