I am trying to spin up Graphite using Synthesize and Vagrant on my Windows 8 machine. The provisioning step fails with an ": invalid option" error. Any suggestions?

$ vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Importing base box 'synthesize'...
==> default: Matching MAC address for NAT networking...
==> default: Setting the name of the VM: synthesize_default_1415917860626
==> 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: Forwarding ports...
default: 443 => 8443 (adapter 1)
default: 8125 => 8125 (adapter 1)
default: 2003 => 22003 (adapter 1)
default: 2004 => 22004 (adapter 1)
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: Warning: Remote connection disconnect. Retrying...
==> default: Machine booted and ready!
GuestAdditions 4.3.10 running --- OK.
==> default: Checking for guest additions in VM...
==> default: Mounting shared folders...
default: /vagrant => C:/Users/Workspace/synthesize
==> default: Running provisioner: shell...
default: Running: inline script
stdin: is not a tty
: invalid option
The following SSH command responded with a non-zero exit status.
Vagrant assumes that this means the command failed!

chmod +x /tmp/vagrant-shell && /tmp/vagrant-shell

Stdout from the command:

Stderr from the command:

stdin: is not a tty
: invalid option
$