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-rw-r--r--compiler/rustc_index/src/lib.rs4
1 files changed, 3 insertions, 1 deletions
diff --git a/compiler/rustc_index/src/lib.rs b/compiler/rustc_index/src/lib.rs
index 33c3c536f..a00d7bd68 100644
--- a/compiler/rustc_index/src/lib.rs
+++ b/compiler/rustc_index/src/lib.rs
@@ -1,7 +1,9 @@
+#![deny(rustc::untranslatable_diagnostic)]
+#![deny(rustc::diagnostic_outside_of_impl)]
#![feature(allow_internal_unstable)]
#![feature(bench_black_box)]
#![feature(extend_one)]
-#![feature(let_else)]
+#![cfg_attr(bootstrap, feature(let_else))]
#![feature(min_specialization)]
#![feature(new_uninit)]
#![feature(step_trait)]