From 1414ec68e420d476d92252b103b2b6a5cd7776b8 Mon Sep 17 00:00:00 2001
From: Hanno Braun <hanno@braun-odw.eu>
Date: Mon, 7 Mar 2022 15:22:11 +0100
Subject: [PATCH] Set default log level to WARN

---
 src/main.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/main.rs b/src/main.rs
index 8b89d41cd..43230e146 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -36,8 +36,16 @@ use crate::{
 };
 
 fn main() -> anyhow::Result<()> {
+    // Respect `RUST_LOG`. If that's not defined or erroneous, log warnings and
+    // above.
+    //
+    // It would be better to fail, if `RUST_LOG` is erroneous, but I don't know
+    // how to distinguish between that and the "not defined" case.
     tracing_subscriber::fmt()
-        .with_env_filter(EnvFilter::from_default_env())
+        .with_env_filter(
+            EnvFilter::try_from_default_env()
+                .unwrap_or_else(|_| EnvFilter::new("WARN")),
+        )
         .event_format(format().pretty())
         .init();