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-rw-r--r--compiler/rustc_expand/src/lib.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/compiler/rustc_expand/src/lib.rs b/compiler/rustc_expand/src/lib.rs
index 6dfeb047ec9..49b0bb55d87 100644
--- a/compiler/rustc_expand/src/lib.rs
+++ b/compiler/rustc_expand/src/lib.rs
@@ -4,11 +4,13 @@
 #![feature(format_args_capture)]
 #![feature(if_let_guard)]
 #![feature(iter_zip)]
+#![feature(let_else)]
 #![feature(proc_macro_diagnostic)]
 #![feature(proc_macro_internals)]
 #![feature(proc_macro_span)]
 #![feature(try_blocks)]
 #![recursion_limit = "256"]
+#![cfg_attr(not(bootstrap), allow(rustc::potential_query_instability))]
 
 #[macro_use]
 extern crate rustc_macros;