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-rw-r--r--compiler/rustc_interface/src/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_interface/src/lib.rs b/compiler/rustc_interface/src/lib.rs
index a41a749ee..542b638bb 100644
--- a/compiler/rustc_interface/src/lib.rs
+++ b/compiler/rustc_interface/src/lib.rs
@@ -1,4 +1,5 @@
#![feature(box_patterns)]
+#![feature(decl_macro)]
#![feature(internal_output_capture)]
#![feature(thread_spawn_unchecked)]
#![feature(once_cell)]