Update tests for revert of never type stabilization

Update tests for revert of never type stabilization

Auto merge of rust-lang#4749 - flip1995:backport_merge, r=Manishearth

Merge backport branches back into master

r? @Manishearth

cc rust-lang#4745

changelog: none

Fix ICE rust-lang#4579

Run update_lints for Unicode lint

Auto merge of rust-lang#4235 - Manishearth:rustup, r=Manishearth

Rustup to 5f9c044

Fixes fallout from https://github.com/rust-lang/rust/pull/62091/files

changelog: none

[Backported] Rustup to rust-lang/rust#59545

Auto merge of rust-lang#4104 - Manishearth:beta-backports, r=flip1995

Backport rust-lang#4101 to beta

This lint has been causing lots of problems.

I'll check up on other potential beta backports when I build the new changelog

r? @oli-obk

Merge pull request rust-lang#4003 from rust-lang/stable-backports

Backport some things to stable

Merge pull request rust-lang#4003 from rust-lang/stable-backports

Backport some things to stable