Add deny(unused_lifetimes) to all the crates that have deny(internal).

src/libarena/lib.rs

@@ -13,6 +13,7 @@
 
 #![deny(rust_2018_idioms)]
 #![deny(internal)]
+#![deny(unused_lifetimes)]
 
 #![feature(core_intrinsics)]
 #![feature(dropck_eyepatch)]

src/libfmt_macros/lib.rs

@@ -10,6 +10,7 @@
 
 #![deny(rust_2018_idioms)]
 #![deny(internal)]
+#![deny(unused_lifetimes)]
 
 #![feature(nll)]
 #![feature(rustc_private)]

src/librustc_allocator/lib.rs

@@ -3,6 +3,7 @@
 
 #![deny(rust_2018_idioms)]
 #![deny(internal)]
+#![deny(unused_lifetimes)]
 
 pub mod expand;
 

src/librustc_driver/lib.rs

@@ -18,6 +18,7 @@
 
 #![deny(rust_2018_idioms)]
 #![deny(internal)]
+#![deny(unused_lifetimes)]
 
 pub extern crate getopts;
 #[cfg(unix)]

src/librustc_errors/lib.rs

@@ -6,6 +6,7 @@
 #![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

src/librustc_interface/lib.rs

@@ -8,6 +8,7 @@
 
 #![deny(rust_2018_idioms)]
 #![deny(internal)]
+#![deny(unused_lifetimes)]
 
 #![allow(unused_imports)]
 

src/librustc_metadata/lib.rs

@@ -16,6 +16,7 @@
 
 #![deny(rust_2018_idioms)]
 #![deny(internal)]
+#![deny(unused_lifetimes)]
 
 extern crate libc;
 #[allow(unused_extern_crates)]

src/librustc_passes/lib.rs

@@ -13,6 +13,7 @@
 
 #![deny(rust_2018_idioms)]
 #![deny(internal)]
+#![deny(unused_lifetimes)]
 
 #[macro_use]
 extern crate rustc;

src/librustc_privacy/lib.rs

@@ -2,6 +2,7 @@
 
 #![deny(rust_2018_idioms)]
 #![deny(internal)]
+#![deny(unused_lifetimes)]
 
 #![feature(nll)]
 #![feature(rustc_diagnostic_macros)]

src/librustc_resolve/lib.rs

@@ -12,6 +12,7 @@
 
 #![deny(rust_2018_idioms)]
 #![deny(internal)]
+#![deny(unused_lifetimes)]
 
 pub use rustc::hir::def::{Namespace, PerNS};
 

src/librustc_save_analysis/lib.rs

@@ -2,6 +2,7 @@
 #![feature(nll)]
 #![deny(rust_2018_idioms)]
 #![deny(internal)]
+#![deny(unused_lifetimes)]
 #![allow(unused_attributes)]
 
 #![recursion_limit="256"]

src/librustc_typeck/lib.rs

@@ -72,6 +72,7 @@ This API is completely unstable and subject to change.
 
 #![deny(rust_2018_idioms)]
 #![deny(internal)]
+#![deny(unused_lifetimes)]
 #![allow(explicit_outlives_requirements)]
 
 #[macro_use] extern crate log;

src/libsyntax/lib.rs

@@ -9,6 +9,7 @@
 
 #![deny(rust_2018_idioms)]
 #![deny(internal)]
+#![deny(unused_lifetimes)]
 
 #![feature(bind_by_move_pattern_guards)]
 #![feature(crate_visibility_modifier)]

src/libsyntax_pos/lib.rs

@@ -8,6 +8,7 @@
 
 #![deny(rust_2018_idioms)]
 #![deny(internal)]
+#![deny(unused_lifetimes)]
 
 #![feature(const_fn)]
 #![feature(crate_visibility_modifier)]