rustc-ap-rustc_errors 637.0.0

Automatically published version of the package `rustc_errors` in the rust-lang/rust repository from commit 7e393b5b3b543d355ae16c1940cf98b6c7fcb8aa The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish

Diagnostics creation and emission for rustc.

This module contains the code for creating and emitting diagnostics.