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-rw-r--r--src/librustc_errors/lib.rs2
1 files changed, 0 insertions, 2 deletions
diff --git a/src/librustc_errors/lib.rs b/src/librustc_errors/lib.rs
index 0a6c02c0ca6..f252d0573dc 100644
--- a/src/librustc_errors/lib.rs
+++ b/src/librustc_errors/lib.rs
@@ -5,11 +5,9 @@
 #![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(unused_lifetimes)]
 
 pub use emitter::ColorConfig;