Say I wish to create a user from console with an email which **already** exists. If I do `User.create(...)`

Because of model validations (*uniqueness in this case*). `create` fails and the output in rails console will say: `rollback transaction` (user is not saved)

For the purpose of testing. Is their a way I can **get the explicit error which triggered the rollback**? In this case it would say something like: "ROLLBACK: email is not unique".