mac vagrant up 启动问题

Question

mac电脑
vagrant1.7.4
virtualbox各种版本都试了

$ vagrant up
/opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/pre-rubygems.rb:31: warning: Insecure world writable dir /opt in PATH, mode 040777
/opt/vagrant/embedded/gems/gems/bundler-1.10.5/lib/bundler/shared_helpers.rb:78: warning: Insecure world writable dir /opt in PATH, mode 040777
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Clearing any previously set forwarded ports...
==> default: Clearing any previously set network interfaces...
==> default: Preparing network interfaces based on configuration...
==> default: Adapter 1: nat
==> default: Adapter 2: hostonly
==> default: Forwarding ports...
==> default: 22 => 2222 (adapter 1)
==> default: Booting VM...
==> default: Waiting for machine to boot. This may take a few minutes...

**The guest machine entered an invalid state while waiting for it
to boot. Valid states are 'starting, running'. The machine is in the
'poweroff' state. Please verify everything is configured
properly and try again.
If the provider you're using has a GUI that comes with it,
it is often helpful to open that and watch the machine, since the
GUI often has more helpful error messages than Vagrant can retrieve.
For example, if you're using VirtualBox, run vagrant up while the
VirtualBox GUI is open.
The primary issue for this error is that the provider you're using
is not properly configured. This is very rarely a Vagrant issue.**