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-rw-r--r--compiler/rustc_monomorphize/src/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_monomorphize/src/lib.rs b/compiler/rustc_monomorphize/src/lib.rs
index 0cfc4371db5..eb576317678 100644
--- a/compiler/rustc_monomorphize/src/lib.rs
+++ b/compiler/rustc_monomorphize/src/lib.rs
@@ -2,6 +2,7 @@
 #![feature(array_windows)]
 #![feature(file_buffered)]
 #![feature(if_let_guard)]
+#![feature(impl_trait_in_assoc_type)]
 #![feature(let_chains)]
 #![warn(unreachable_pub)]
 // tidy-alphabetical-end