From 7ee458e23f65aa36ebca0cda1befe0b3009d92a5 Mon Sep 17 00:00:00 2001
From: Julio Biason <j.biason@engys.com>
Date: Wed, 26 Jun 2024 10:34:58 -0300
Subject: [PATCH] No logs unless the variable is present

---
 synctracingtest/src/main.rs | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/synctracingtest/src/main.rs b/synctracingtest/src/main.rs
index dcfcea9..ae45f62 100644
--- a/synctracingtest/src/main.rs
+++ b/synctracingtest/src/main.rs
@@ -1,11 +1,18 @@
 use std::path::Path;
 
-use tracing_subscriber::prelude::*;
+use tracing::level_filters::LevelFilter;
+use tracing_subscriber::{prelude::*, EnvFilter};
 
 fn main() {
+    let env_filter = EnvFilter::builder()
+        .with_default_directive(LevelFilter::OFF.into())
+        .with_env_var("LOG")
+        .from_env()
+        .unwrap();
+
     tracing_subscriber::registry()
         .with(tracing_subscriber::fmt::layer())
-        .with(tracing_subscriber::EnvFilter::from_default_env())
+        .with(env_filter)
         .init();
     println!("Hello, world!");
 
@@ -14,4 +21,6 @@ fn main() {
 
     tracing::debug!(a);
     tracing::info!(?p);
+
+    tracing::error!("No!");
 }