X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Flibrustc_errors%2Flib.rs;h=05cee6dff230935626a535485da859ad0cf1011f;hb=961a9d6e97a37ff1bb33578721dfa8687054c7b8;hp=cc3180c783bdf9c22296cbed3b7181fc36c076a0;hpb=053666f9062d71091ea7970dcbad5963097191a3;p=rust.git

diff --git a/src/librustc_errors/lib.rs b/src/librustc_errors/lib.rs
index cc3180c783b..05cee6dff23 100644
--- a/src/librustc_errors/lib.rs
+++ b/src/librustc_errors/lib.rs
@@ -1,11 +1,17 @@
+//! Diagnostics creation and emission for `rustc`.
+//!
+//! This module contains the code for creating and emitting diagnostics.
+
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
 
+#![feature(crate_visibility_modifier)]
 #![allow(unused_attributes)]
 #![cfg_attr(unix, feature(libc))]
 #![feature(nll)]
 #![feature(optin_builtin_traits)]
 #![deny(rust_2018_idioms)]
 #![deny(internal)]
+#![deny(unused_lifetimes)]
 
 #[allow(unused_extern_crates)]
 extern crate serialize as rustc_serialize; // used by deriving