rustc-ap-rustc_errors 644.0.0

Automatically published version of the package `rustc_errors` in the rust-lang/rust repository from commit 0176a9eef845e7421b7e2f7ef015333a41a7c027 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.