No usable default provider could be found for your system.

hawksbill

$ vagrant up
No usable default provider could be found for your system.

Vagrant relies on interactions with 3rd party systems, known as
"providers", to provide Vagrant with resources to run development
environments. Examples are VirtualBox, VMware, Hyper-V.

The easiest solution to this message is to install VirtualBox, which
is available for free on all major platforms.

If you believe you already have a provider available, make sure it
is properly installed and configured. You can see more details about
why a particular provider isn't working by forcing usage with
`vagrant up --provider=PROVIDER`, which should give you a more specific
error message for that particular provider.

The Vagrantfile contains references to a provider that is not installed. In this case the aws plugin was missing. To install it run the following command:

$ vagrant plugin install vagrant-aws
Installing the 'vagrant-aws' plugin. This can take a few minutes...
Fetching: vagrant-share-1.1.9.gem (100%)
Fetching: excon-0.58.0.gem (100%)
Fetching: formatador-0.2.5.gem (100%)
Fetching: fog-core-1.45.0.gem (100%)
Fetching: fog-json-1.0.2.gem (100%)
Fetching: mini_portile2-2.2.0.gem (100%)
Fetching: nokogiri-1.8.0.gem (100%)
Building native extensions.  This could take a while...
Fetching: fog-xml-0.1.3.gem (100%)
Fetching: ipaddress-0.8.3.gem (100%)
Fetching: xml-simple-1.1.5.gem (100%)
Fetching: fog-aliyun-0.2.0.gem (100%)
Fetching: fog-atmos-0.1.0.gem (100%)
Fetching: fog-aws-1.4.1.gem (100%)
Fetching: inflecto-0.0.2.gem (100%)
Fetching: fog-brightbox-0.13.0.gem (100%)
Fetching: fog-cloudatcost-0.1.2.gem (100%)
Fetching: fog-digitalocean-0.3.0.gem (100%)
Fetching: fog-dnsimple-1.0.0.gem (100%)
Fetching: fog-dynect-0.0.3.gem (100%)
Fetching: fog-ecloud-0.3.0.gem (100%)
Fetching: fog-google-0.1.0.gem (100%)
Fetching: fog-internet-archive-0.0.1.gem (100%)
Fetching: fog-joyent-0.0.1.gem (100%)
Fetching: fog-local-0.3.1.gem (100%)
Fetching: fog-openstack-0.1.21.gem (100%)
Fetching: fog-powerdns-0.1.1.gem (100%)
Fetching: fog-profitbricks-4.0.0.gem (100%)
Fetching: fog-rackspace-0.1.5.gem (100%)
Fetching: fog-radosgw-0.0.5.gem (100%)
Fetching: fog-riakcs-0.1.0.gem (100%)
Fetching: fog-sakuracloud-1.7.5.gem (100%)
Fetching: fog-serverlove-0.1.2.gem (100%)
Fetching: fog-softlayer-1.1.4.gem (100%)
Fetching: fog-storm_on_demand-0.1.1.gem (100%)
Fetching: fog-terremark-0.1.0.gem (100%)
Fetching: CFPropertyList-2.3.5.gem (100%)
Fetching: fission-0.5.0.gem (100%)
Fetching: fog-vmfusion-0.1.0.gem (100%)
Fetching: fog-voxel-0.1.0.gem (100%)
Fetching: trollop-2.1.2.gem (100%)
Fetching: rbvmomi-1.11.3.gem (100%)
Fetching: fog-vsphere-1.12.0.gem (100%)
Fetching: fog-xenserver-0.3.0.gem (100%)
Fetching: fog-1.41.0.gem (100%)
------------------------------
Thank you for installing fog!

IMPORTANT NOTICE:
If there's a metagem available for your cloud provider, e.g. `fog-aws`,
you should be using it instead of requiring the full fog collection to avoid
unnecessary dependencies.

'fog' should be required explicitly only if:
- The provider you use doesn't yet have a metagem available.
- You require Ruby 1.9.3 support.
------------------------------
Fetching: iniparse-1.4.4.gem (100%)
Fetching: vagrant-aws-0.7.2.gem (100%)
Installed the plugin 'vagrant-aws (0.7.2)'!