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-rw-r--r--compiler/rustc_session/src/lib.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_session/src/lib.rs b/compiler/rustc_session/src/lib.rs
index 74aef785163..968728905e7 100644
--- a/compiler/rustc_session/src/lib.rs
+++ b/compiler/rustc_session/src/lib.rs
@@ -2,7 +2,7 @@
 #![feature(let_chains)]
 #![feature(min_specialization)]
 #![feature(never_type)]
-#![feature(once_cell)]
+#![feature(lazy_cell)]
 #![feature(option_get_or_insert_default)]
 #![feature(rustc_attrs)]
 #![feature(map_many_mut)]