From 720832c644d4dfe14ec43ae9ef4d74b647ccd77d Mon Sep 17 00:00:00 2001
From: Oliver Scherer <github35764891676564198441@oli-obk.de>
Date: Sat, 25 Jul 2020 17:19:17 +0200
Subject: [PATCH] Update error index generator to tracing

---
 src/tools/error_index_generator/main.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/tools/error_index_generator/main.rs b/src/tools/error_index_generator/main.rs
index c4292d041d05..bd9f8fb04502 100644
--- a/src/tools/error_index_generator/main.rs
+++ b/src/tools/error_index_generator/main.rs
@@ -1,7 +1,7 @@
 #![feature(rustc_private)]
 
-extern crate env_logger;
 extern crate rustc_ast;
+extern crate rustc_driver;
 extern crate rustc_span;
 
 use std::cell::RefCell;
@@ -282,7 +282,7 @@ fn parse_args() -> (OutputFormat, PathBuf) {
 }
 
 fn main() {
-    env_logger::init();
+    rustc_driver::init_env_logger("RUST_LOG");
     let (format, dst) = parse_args();
     let result = rustc_ast::with_default_session_globals(move || main_with_result(format, &dst));
     if let Err(e) = result {