> Yes, it is unlikely that that’s true. It may be unlikely that such changes exist, but evidence from two different people has shown that it's at least somethi

> Yes, it is unlikely that that’s true. It may be unlikely that such changes exist, but evidence from two different people has shown that it's at least something that can be considered (even if it's by people not familiar with Rust). > At least, I can’t think of anything. Or at least, nothing that’s compatible. Nobody asked you to come up with a che, the question was what would happen if someone did come up with such a change. The answer seems to be "it will be added" (assuming it goes through the normal process of course, I'm not claiming that a random change will be added merely because it's compatible), at that point you can no longer claim a feature freeze, because a feature freeze is a much stronger claim than merely saying "it's unlikely that there will be changes". > We do have features for 2018 that are incompatible with 2015. I'm fairly certain that everyone in this discussion understood that there are features in 2018 that are not in 2015, that's the whole point of having a separate edition.