It turns out that the diagnostics generated from NLL for these cases …

…are now exactly the same as that produced by AST borrowck. Bravo!
rust-lang · Mark-Simulacrum · Jun 2, 2018 · Jun 2, 2018 · Jun 4, 2018 · Jun 5, 2018
commit 50224ec1a90eff7a3c475fcd1a19c99e10ee5b26
diff --git a/src/test/ui/generator/pattern-borrow.nll.stderr b/src/test/ui/generator/pattern-borrow.nll.stderr
diff --git a/src/test/ui/issue-45697.nll.stderr b/src/test/ui/issue-45697.nll.stderr