Miss Dada  🏳️‍⚧️

It has for a while on 2018. That PR only affects 2015 IIRC

I coulda sworn I was told by @ekuber @ rustconf that it used NLL for checking lifetimes but it ran both and in the case of an error it still used the AST borrowck for reporting.

I believe you if you think I'm mistaken. I'm def not an expert in this domain

I'm not sure either, lets just wait for esteban to see this.

There are still a couple of places where if you use #[feature(nll)] you get different diagnostics. What this PR is changing is enabling the same transitional mode for 2015, IIUC.

Meaning NLL is used throughout, but the migration is still ongoing.

Look at the current output: https://github.com/rust-lang/rust/blob/898f36c83cc28d7921a1d7b3605323dc5cfcf533/src/test/ui/associated-types/cache/project-fn-ret-contravariant.transmute.stderr … vs pure NLL: https://github.com/rust-lang/rust/blob/898f36c83cc28d7921a1d7b3605323dc5cfcf533/src/test/ui/associated-types/cache/project-fn-ret-contravariant.transmute.nll.stderr …

I don't consider the body buried until the .nll.stderr files don't exist anymore