Ansible fails when installing requirements with "print "- the specified version (%s) was not found in the list of available versions." % role.version"

I have a fairly straightforward playbook that I’m executing in Ansible 1.9.1 which fails regarding the version not being found. I’ve tried specifying and not specifying the version in the requirements.yml. The role does get successfully downloaded with the url that ansible output is displaying but the command is aborted. Is this a bug? Or am I missing some configuration step or typo’ing something?

Mac 10.9.5

provision-consul.yml