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-rw-r--r--compiler/rustc_serialize/src/lib.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/compiler/rustc_serialize/src/lib.rs b/compiler/rustc_serialize/src/lib.rs
index e606f427335..079d44bac68 100644
--- a/compiler/rustc_serialize/src/lib.rs
+++ b/compiler/rustc_serialize/src/lib.rs
@@ -18,6 +18,8 @@ Core encoding and decoding interfaces.
 #![feature(new_uninit)]
 #![cfg_attr(test, feature(test))]
 #![allow(rustc::internal)]
+#![deny(rustc::untranslatable_diagnostic)]
+#![deny(rustc::diagnostic_outside_of_impl)]
 
 pub use self::serialize::{Decodable, Decoder, Encodable, Encoder};