Always import all tracing macros for the entire crate instead of piecemeal by module

compiler/rustc_interface/src/interface.rs

@@ -332,7 +332,7 @@ pub fn create_compiler_and_run<R>(config: Config, f: impl FnOnce(&Compiler) -> R
 // JUSTIFICATION: before session exists, only config
 #[allow(rustc::bad_opt_access)]
 pub fn run_compiler<R: Send>(config: Config, f: impl FnOnce(&Compiler) -> R + Send) -> R {
-    tracing::trace!("run_compiler");
+    trace!("run_compiler");
     util::run_in_thread_pool_with_globals(
         config.opts.edition,
         config.opts.unstable_opts.threads,

compiler/rustc_interface/src/lib.rs

@@ -8,6 +8,9 @@
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]
 
+#[macro_use]
+extern crate tracing;
+
 mod callbacks;
 mod errors;
 pub mod interface;

compiler/rustc_interface/src/passes.rs

@@ -38,7 +38,6 @@ use rustc_span::symbol::{sym, Symbol};
 use rustc_span::FileName;
 use rustc_trait_selection::traits;
 use rustc_typeck as typeck;
-use tracing::{info, warn};
 
 use std::any::Any;
 use std::cell::RefCell;
@@ -165,7 +164,7 @@ pub fn create_resolver(
     krate: &ast::Crate,
     crate_name: &str,
 ) -> BoxedResolver {
-    tracing::trace!("create_resolver");
+    trace!("create_resolver");
     BoxedResolver::new(sess, move |sess, resolver_arenas| {
         Resolver::new(sess, krate, crate_name, metadata_loader, resolver_arenas)
     })
@@ -279,7 +278,7 @@ pub fn configure_and_expand(
     crate_name: &str,
     resolver: &mut Resolver<'_>,
 ) -> Result<ast::Crate> {
-    tracing::trace!("configure_and_expand");
+    trace!("configure_and_expand");
     pre_expansion_lint(sess, lint_store, resolver.registered_tools(), &krate, crate_name);
     rustc_builtin_macros::register_builtin_macros(resolver);
 

compiler/rustc_interface/src/queries.rs

@@ -166,7 +166,7 @@ impl<'tcx> Queries<'tcx> {
     pub fn expansion(
         &self,
     ) -> Result<&Query<(Lrc<ast::Crate>, Rc<RefCell<BoxedResolver>>, Lrc<LintStore>)>> {
-        tracing::trace!("expansion");
+        trace!("expansion");
         self.expansion.compute(|| {
             let crate_name = self.crate_name()?.peek().clone();
             let (krate, lint_store) = self.register_plugins()?.take();

compiler/rustc_interface/src/util.rs

@@ -1,3 +1,4 @@
+use info;
 use libloading::Library;
 use rustc_ast as ast;
 use rustc_codegen_ssa::traits::CodegenBackend;
@@ -31,7 +32,6 @@ use std::path::{Path, PathBuf};
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::OnceLock;
 use std::thread;
-use tracing::info;
 
 /// Function pointer type that constructs a new CodegenBackend.
 pub type MakeBackendFn = fn() -> Box<dyn CodegenBackend>;