From 79eed33a8a9fd9804012be67c00ffbe160270d28 Mon Sep 17 00:00:00 2001
From: Oli Scherer <git-spam-no-reply9815368754983@oli-obk.de>
Date: Thu, 7 Oct 2021 10:59:11 +0000
Subject: [PATCH] Always register a tracing subscriber, even if no env var is
 set

---
 compiler/rustc_driver/src/lib.rs | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/compiler/rustc_driver/src/lib.rs b/compiler/rustc_driver/src/lib.rs
index ab7ee03b643f8..7757488129025 100644
--- a/compiler/rustc_driver/src/lib.rs
+++ b/compiler/rustc_driver/src/lib.rs
@@ -1253,12 +1253,6 @@ pub fn init_rustc_env_logger() {
 /// tracing crate version. In contrast to `init_rustc_env_logger` it allows you to choose an env var
 /// other than `RUSTC_LOG`.
 pub fn init_env_logger(env: &str) {
-    // Don't register a dispatcher if there's no filter to print anything
-    match std::env::var(env) {
-        Err(_) => return,
-        Ok(s) if s.is_empty() => return,
-        Ok(_) => {}
-    }
     let color_logs = match std::env::var(String::from(env) + "_COLOR") {
         Ok(value) => match value.as_ref() {
             "always" => true,