region tests incorrectly passing with NLL enabled

[nikomatsakis]

The following tests pass under NLL, but ought not to (in some cases, light editing is required to observe that):

• ui/regions/regions-assoc-type-in-supertrait-outlives-container.rs, modified variant
• ui/regions/regions-free-region-ordering-caller.rs
• ui/regions/regions-outlives-projection-container-wc.rs
• ui/regions/regions-outlives-projection-container-hrtb.rs

To observe the problems, though, you need to run in true NLL mode (i.e., #![feature(nll)] or -Zborrowck=mir). In migration mode, the lexical borrow checker still reports the errors in question.

[matthewjasper]

This appear to have regressed between nightly-2018-10-24 and nightly-2018-10-26.

#55323 looks suspicious

[matthewjasper]

These tests are now properly tested with NLL enabled using revisions. Once migrate mode is the default we can switch compare mode to use -Zborrowck=mir and close this issue.