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 11565ba72d7555f1fb157468fd4c83b957eb873e..280fa70451141f85f821c2f2b02e0f87f82d5a83 100644 (file)
--- a/compiler/rustc_builtin_macros/src/lib.rs
+++ b/compiler/rustc_builtin_macros/src/lib.rs
@@ -16,6 +16,9 @@
 
 extern crate proc_macro;
 
+#[macro_use]
+extern crate tracing;
+
 use crate::deriving::*;
 
 use rustc_expand::base::{MacroExpanderFn, ResolverExpand, SyntaxExtensionKind};