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-rw-r--r--compiler/rustc_borrowck/src/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_borrowck/src/lib.rs b/compiler/rustc_borrowck/src/lib.rs
index eaf9fc45837..bb64571889b 100644
--- a/compiler/rustc_borrowck/src/lib.rs
+++ b/compiler/rustc_borrowck/src/lib.rs
@@ -3,6 +3,7 @@
 #![allow(internal_features)]
 #![feature(rustdoc_internals)]
 #![doc(rust_logo)]
+#![feature(assert_matches)]
 #![feature(associated_type_bounds)]
 #![feature(box_patterns)]
 #![feature(let_chains)]