From 8dddfde6e3971437ff43e5f9fb6c424951c1fca2 Mon Sep 17 00:00:00 2001
From: Eduard-Mihai Burtescu <edy.burt@gmail.com>
Date: Tue, 11 Jun 2019 12:47:56 +0300
Subject: [PATCH] rustc_traits: deny(unused_lifetimes).

---
 src/librustc_traits/chalk_context/mod.rs | 2 +-
 src/librustc_traits/lib.rs               | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/librustc_traits/chalk_context/mod.rs b/src/librustc_traits/chalk_context/mod.rs
index 96c647ca31e..bf61a558a46 100644
--- a/src/librustc_traits/chalk_context/mod.rs
+++ b/src/librustc_traits/chalk_context/mod.rs
@@ -575,7 +575,7 @@ impl ExClauseFold<'tcx> for ChalkArenas<'tcx> {
         }
     }
 
-    fn visit_ex_clause_with<'gcx: 'tcx, V: TypeVisitor<'tcx>>(
+    fn visit_ex_clause_with<V: TypeVisitor<'tcx>>(
         ex_clause: &ExClause<Self>,
         visitor: &mut V,
     ) -> bool {
diff --git a/src/librustc_traits/lib.rs b/src/librustc_traits/lib.rs
index 959130f1cf2..7311fd96dad 100644
--- a/src/librustc_traits/lib.rs
+++ b/src/librustc_traits/lib.rs
@@ -3,6 +3,7 @@
 
 #![deny(rust_2018_idioms)]
 #![deny(internal)]
+#![deny(unused_lifetimes)]
 
 #![feature(crate_visibility_modifier)]
 #![feature(in_band_lifetimes)]