Rollup merge of #101864 - notriddle:notriddle/h1-h2-h3-h4, r=GuillaumeGomez

[rust.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 0192f3c8ca4f253f77d936911e1b8d397c1fdbbf..280fa70451141f85f821c2f2b02e0f87f82d5a83 100644 (file)
--- a/compiler/rustc_builtin_macros/src/lib.rs
+++ b/compiler/rustc_builtin_macros/src/lib.rs
@@ -8,7 +8,7 @@
 #![feature(decl_macro)]
 #![feature(if_let_guard)]
 #![feature(is_sorted)]
-#![cfg_attr(bootstrap, feature(let_chains))]
+#![feature(let_chains)]
 #![feature(let_else)]
 #![feature(proc_macro_internals)]
 #![feature(proc_macro_quote)]
@@ -16,6 +16,9 @@
 
 extern crate proc_macro;
 
+#[macro_use]
+extern crate tracing;
+
 use crate::deriving::*;
 
 use rustc_expand::base::{MacroExpanderFn, ResolverExpand, SyntaxExtensionKind};