Error of specifying owner & group of Sync directory

gistfile1.txt

Taisuke-no-MacBook-Air:todo-sample-app araky$ vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Importing base box 'ubuntu1404-opsworks'...
==> default: Matching MAC address for NAT networking...
==> default: Setting the name of the VM: todo-sample-app_default_1415788850197_12421
==> 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...
    default: SSH address: 127.0.0.1:2222
    default: SSH username: vagrant
    default: SSH auth method: private key
    default: Warning: Connection timeout. Retrying...
==> default: Machine booted and ready!
==> default: Checking for guest additions in VM...
==> default: Configuring and enabling network interfaces...
==> default: Mounting shared folders...
    default: /vagrant => /Users/araky/git/test_opsworks/postgres/todo-sample-app
Vagrant::Errors::LinuxMountFailed: Failed to mount folders in Linux guest. This is usually because
the "vboxsf" file system is not available. Please verify that
the guest additions are properly installed in the guest and
can work properly. The command attempted was:

mount -t vboxsf -o uid=`id -u deploy`,gid=`getent group www-data | cut -d: -f3` vagrant /vagrant
mount -t vboxsf -o uid=`id -u deploy`,gid=`id -g www-data` vagrant /vagrant