New upstream version 1.65.0+dfsg1

[rustc.git] / compiler / rustc_builtin_macros / src / lib.rs

diff --git a/compiler/rustc_builtin_macros/src/lib.rs b/compiler/rustc_builtin_macros/src/lib.rs
index 11565ba72d7555f1fb157468fd4c83b957eb873e..8aeb3b82a9cd01059ab409aa6e7ba803055a4f2a 100644 (file)
--- a/compiler/rustc_builtin_macros/src/lib.rs
+++ b/compiler/rustc_builtin_macros/src/lib.rs
@@ -9,13 +9,16 @@
 #![feature(if_let_guard)]
 #![feature(is_sorted)]
 #![feature(let_chains)]
-#![feature(let_else)]
+#![cfg_attr(bootstrap, feature(let_else))]
 #![feature(proc_macro_internals)]
 #![feature(proc_macro_quote)]
 #![recursion_limit = "256"]
 
 extern crate proc_macro;
 
+#[macro_use]
+extern crate tracing;
+
 use crate::deriving::*;
 
 use rustc_expand::base::{MacroExpanderFn, ResolverExpand, SyntaxExtensionKind};