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-rw-r--r--compiler/rustc_sanitizers/src/lib.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_sanitizers/src/lib.rs b/compiler/rustc_sanitizers/src/lib.rs
index e4792563e71..729c921450e 100644
--- a/compiler/rustc_sanitizers/src/lib.rs
+++ b/compiler/rustc_sanitizers/src/lib.rs
@@ -4,7 +4,7 @@
 //! compiler.
 
 // tidy-alphabetical-start
-#![feature(let_chains)]
+#![cfg_attr(bootstrap, feature(let_chains))]
 // tidy-alphabetical-end
 
 pub mod cfi;