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-rw-r--r--compiler/rustc_mir_build/src/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_mir_build/src/lib.rs b/compiler/rustc_mir_build/src/lib.rs
index b53bd3d0710..87975294595 100644
--- a/compiler/rustc_mir_build/src/lib.rs
+++ b/compiler/rustc_mir_build/src/lib.rs
@@ -3,6 +3,7 @@
 //! This crate also contains the match exhaustiveness and usefulness checking.
 #![allow(rustc::potential_query_instability)]
 #![feature(assert_matches)]
+#![feature(associated_type_bounds)]
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]
 #![feature(if_let_guard)]