tree adc742fc1cd5452e6ce9de1647537d50f59b7bf9
parent 2152b45fa28a361beba9aab0885972323a444e28
author jim-slattery-rs <jim.slattery@rightscale.com> 1449672243 -0500
committer jim-slattery-rs <jim.slattery@rightscale.com> 1449672477 -0500

fixed up: Succeed(), HaveOccurred()
- Succeed() would panic if error was a nil pointer, like: *CustomError
- Succeed() and HaveOccurred() weren't both rejecting non-error types in all cases.
Added new tests for the above.