This message is hard to parse.

1. Warning!
2. You called a Hash method on `params` that loses track of which params were permitted. Uh oh.
3. Yeah that's a bug, and a security concern! So what do I do!!
4. To fix this and make this annoying message go away, stop using `method_name` on your params.
5. It'll stop working in the next Rails release, to boot!