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-rw-r--r--src/librustc_passes/lib.rs5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/librustc_passes/lib.rs b/src/librustc_passes/lib.rs
index fcdbd6384d5..91bfb19aa9d 100644
--- a/src/librustc_passes/lib.rs
+++ b/src/librustc_passes/lib.rs
@@ -19,8 +19,9 @@
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
-      html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
-      html_root_url = "https://doc.rust-lang.org/nightly/")]
+       html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
+       html_root_url = "https://doc.rust-lang.org/nightly/")]
+#![cfg_attr(not(stage0), deny(warnings))]
 
 #![feature(rustc_diagnostic_macros)]
 #![feature(staged_api)]