From 9e6e89af697dad4e4505111adef37733cdcbe47e Mon Sep 17 00:00:00 2001
From: Matthew Jasper <mjjasper1@gmail.com>
Date: Sun, 10 Oct 2021 19:59:36 +0100
Subject: [PATCH] Fix RUSTC_LOG handling

Rustc was incorrectly reading the value of `RUSTC_LOG` as the
environment vairable with the logging configuration, rather than the
logging configuration itself.
---
 compiler/rustc_driver/src/lib.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler/rustc_driver/src/lib.rs b/compiler/rustc_driver/src/lib.rs
index 05c7e11cbc29a..9a57ec991444a 100644
--- a/compiler/rustc_driver/src/lib.rs
+++ b/compiler/rustc_driver/src/lib.rs
@@ -1259,7 +1259,7 @@ pub fn init_env_logger(env: &str) {
     };
 
     let filter = match std::env::var(env) {
-        Ok(env) => EnvFilter::from_env(env),
+        Ok(env) => EnvFilter::new(env),
         _ => EnvFilter::default().add_directive(filter::Directive::from(LevelFilter::WARN)),
     };