2016 continues to be a tough year for refiners in general, but it has been especially hard on CVR Refining (NYSE: CVRR). On top of the lower-refining-margin environment, CVR has also had to deal with operational issues from some of its partners, and the seemingly out-of-control costs to comply with the U.S. Environmental Protection Agency’s Renewable Fuel Standard. The company was able to produce modest profits this past quarter, but management wasn’t too positive about the future of the industry if it continues down its current track.