1 files changed, 7 insertions, 5 deletions
diff --git a/compiler/rustc_driver_impl/src/lib.rs b/compiler/rustc_driver_impl/src/lib.rs
index 83552af5a0e..038b93dda08 100644
--- a/compiler/rustc_driver_impl/src/lib.rs
+++ b/compiler/rustc_driver_impl/src/lib.rs
@@ -1507,13 +1507,15 @@ pub fn init_logger(early_dcx: &EarlyDiagCtxt, cfg: rustc_log::LoggerConfig) {
     }
 }
 
-pub fn init_logger_with_additional_layer(
+pub fn init_logger_with_additional_layer<F, T>(
     early_dcx: &EarlyDiagCtxt,
     cfg: rustc_log::LoggerConfig,
-    additional_tracing_layer: impl rustc_log::Layer<rustc_log::Registry> + Send + Sync,
-) {
-    if let Err(error) = rustc_log::init_logger_with_additional_layer(cfg, additional_tracing_layer)
-    {
+    build_subscriber: F,
+) where
+    F: FnOnce() -> T,
+    T: rustc_log::BuildSubscriberRet,
+{
+    if let Err(error) = rustc_log::init_logger_with_additional_layer(cfg, build_subscriber) {
         early_dcx.early_fatal(error.to_string());
     }
 }