Backport json emitter and stdin changes#5054

Merged

calebcartwright merged 5 commits intorust-lang:masterfrom karyon:backport-json-emitter-and-stdin-changes

Jan 2, 2022

+249-122

Commits on Oct 28, 2021

Make --check work when running from stdin. (rust-lang#3896 )

jugglerchris
authored and
karyon
committed
Fix --check -l with stdin. (rust-lang#3910 )

jugglerchris
authored and
karyon
committed
refactor: update json emitter to better handle errors (rust-lang#3953 )

calebcartwright
authored and
karyon
committed
Fix newlines in JSON output (rust-lang#4262 )

Timmmm
authored and
karyon
committed
Use <stdin> when emitting stdin as filename (rust-lang#4298 )

topecongiro
authored and
karyon
committed