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-rw-r--r--compiler/rustc_ast_lowering/src/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_ast_lowering/src/lib.rs b/compiler/rustc_ast_lowering/src/lib.rs
index a594339296f..b1e601516ab 100644
--- a/compiler/rustc_ast_lowering/src/lib.rs
+++ b/compiler/rustc_ast_lowering/src/lib.rs
@@ -32,6 +32,7 @@
 
 #![feature(crate_visibility_modifier)]
 #![feature(box_patterns)]
+#![feature(let_else)]
 #![feature(never_type)]
 #![recursion_limit = "256"]
 #![cfg_attr(not(bootstrap), allow(rustc::potential_query_instability))]