I too consider this a footgun. Most applications will have something like tracing_subscriber::registry() .with( tracing_subscribe

I too consider this a footgun. Most applications will have something like tracing_subscriber::registry() .with( tracing_subscriber::EnvFilter::try_from_default_env() .unwrap_or_else(|_| "my_app=info".into()), ) .with(tracing_subscriber::fmt::layer()) .init(); in the `main.rs` which will default the tracing if RUST_LOG env var is not set.