This fails as expected:
$ rspec --format d spec/unit/application/describe_spec.rb
TypeDoc
(#13070) Should not explode (Will fail on Puppet 2.7.7 through 2.7.14) (FAILED - 1)
Failures:
1) TypeDoc (#13070) Should not explode (Will fail on Puppet 2.7.7 through 2.7.14)