Simplify tracing-subscriber initialization (#128)

examples/404.rs

@@ -18,9 +18,7 @@ async fn main() {
     if std::env::var("RUST_LOG").is_err() {
         std::env::set_var("RUST_LOG", "404=debug")
     }
-    tracing_subscriber::fmt::fmt()
-        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
-        .init();
+    tracing_subscriber::fmt::init();
 
     // build our application with a route
     let app = route("/", get(handler))

examples/error_handling_and_dependency_injection.rs

@@ -28,9 +28,7 @@ async fn main() {
     if std::env::var("RUST_LOG").is_err() {
         std::env::set_var("RUST_LOG", "error_handling_and_dependency_injection=debug")
     }
-    tracing_subscriber::fmt::fmt()
-        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
-        .init();
+    tracing_subscriber::fmt::init();
 
     // Inject a `UserRepo` into our handlers via a trait object. This could be
     // the live implementation or just a mock for testing.

examples/form.rs

@@ -14,9 +14,7 @@ async fn main() {
     if std::env::var("RUST_LOG").is_err() {
         std::env::set_var("RUST_LOG", "form=debug")
     }
-    tracing_subscriber::fmt::fmt()
-        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
-        .init();
+    tracing_subscriber::fmt::init();
 
     // build our application with some routes
     let app = route("/", get(show_form).post(accept_form));

examples/hello_world.rs

@@ -13,9 +13,7 @@ async fn main() {
     if std::env::var("RUST_LOG").is_err() {
         std::env::set_var("RUST_LOG", "hello_world=debug")
     }
-    tracing_subscriber::fmt::fmt()
-        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
-        .init();
+    tracing_subscriber::fmt::init();
 
     // build our application with a route
     let app = route("/", get(handler));

examples/key_value_store.rs

@@ -35,9 +35,7 @@ async fn main() {
     if std::env::var("RUST_LOG").is_err() {
         std::env::set_var("RUST_LOG", "key_value_store=debug,tower_http=debug")
     }
-    tracing_subscriber::fmt::fmt()
-        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
-        .init();
+    tracing_subscriber::fmt::init();
 
     // Build our application by composing routes
     let app = route(

examples/multipart_form.rs

@@ -16,9 +16,7 @@ async fn main() {
     if std::env::var("RUST_LOG").is_err() {
         std::env::set_var("RUST_LOG", "multipart_form=debug,tower_http=debug")
     }
-    tracing_subscriber::fmt::fmt()
-        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
-        .init();
+    tracing_subscriber::fmt::init();
 
     // build our application with some routes
     let app = route("/", get(show_form).post(accept_form))

examples/sessions.rs

@@ -24,9 +24,7 @@ async fn main() {
     if std::env::var("RUST_LOG").is_err() {
         std::env::set_var("RUST_LOG", "sessions=debug")
     }
-    tracing_subscriber::fmt::fmt()
-        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
-        .init();
+    tracing_subscriber::fmt::init();
 
     // `MemoryStore` just used as an example. Don't use this in production.
     let store = MemoryStore::new();

examples/sse.rs

@@ -17,9 +17,7 @@ async fn main() {
     if std::env::var("RUST_LOG").is_err() {
         std::env::set_var("RUST_LOG", "sse=debug,tower_http=debug")
     }
-    tracing_subscriber::fmt::fmt()
-        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
-        .init();
+    tracing_subscriber::fmt::init();
 
     // build our application with a route
     let app = nest(

examples/static_file_server.rs

@@ -15,9 +15,7 @@ async fn main() {
     if std::env::var("RUST_LOG").is_err() {
         std::env::set_var("RUST_LOG", "static_file_server=debug,tower_http=debug")
     }
-    tracing_subscriber::fmt::fmt()
-        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
-        .init();
+    tracing_subscriber::fmt::init();
 
     let app = nest(
         "/static",

examples/templates.rs

@@ -15,9 +15,7 @@ async fn main() {
     if std::env::var("RUST_LOG").is_err() {
         std::env::set_var("RUST_LOG", "templates=debug")
     }
-    tracing_subscriber::fmt::fmt()
-        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
-        .init();
+    tracing_subscriber::fmt::init();
 
     // build our application with some routes
     let app = route("/greet/:name", get(greet));

examples/testing.rs

@@ -13,9 +13,7 @@ async fn main() {
     if std::env::var("RUST_LOG").is_err() {
         std::env::set_var("RUST_LOG", "testing=debug,tower_http=debug")
     }
-    tracing_subscriber::fmt::fmt()
-        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
-        .init();
+    tracing_subscriber::fmt::init();
 
     let addr = std::net::SocketAddr::from(([127, 0, 0, 1], 3000));
 

examples/tls_rustls.rs

@@ -21,9 +21,7 @@ async fn main() {
     if std::env::var("RUST_LOG").is_err() {
         std::env::set_var("RUST_LOG", "rustls=debug")
     }
-    tracing_subscriber::fmt::fmt()
-        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
-        .init();
+    tracing_subscriber::fmt::init();
 
     let rustls_config = rustls_server_config(
         "examples/self_signed_certs/key.pem",

examples/todos.rs

@@ -38,9 +38,7 @@ async fn main() {
     if std::env::var("RUST_LOG").is_err() {
         std::env::set_var("RUST_LOG", "todos=debug,tower_http=debug")
     }
-    tracing_subscriber::fmt::fmt()
-        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
-        .init();
+    tracing_subscriber::fmt::init();
 
     let db = Db::default();
 

examples/tokio_postgres.rs

@@ -17,9 +17,7 @@ async fn main() {
     if std::env::var("RUST_LOG").is_err() {
         std::env::set_var("RUST_LOG", "tokio_postgres=debug")
     }
-    tracing_subscriber::fmt::fmt()
-        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
-        .init();
+    tracing_subscriber::fmt::init();
 
     // setup connection pool
     let manager =

examples/unix_domain_socket.rs

@@ -40,9 +40,7 @@ async fn main() {
     if std::env::var("RUST_LOG").is_err() {
         std::env::set_var("RUST_LOG", "debug")
     }
-    tracing_subscriber::fmt::fmt()
-        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
-        .init();
+    tracing_subscriber::fmt::init();
 
     let path = PathBuf::from("/tmp/axum/helloworld");
 

examples/versioning.rs

@@ -20,9 +20,7 @@ async fn main() {
     if std::env::var("RUST_LOG").is_err() {
         std::env::set_var("RUST_LOG", "versioning=debug")
     }
-    tracing_subscriber::fmt::fmt()
-        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
-        .init();
+    tracing_subscriber::fmt::init();
 
     // build our application with some routes
     let app = route("/:version/foo", get(handler));

examples/websocket.rs

@@ -26,9 +26,7 @@ async fn main() {
     if std::env::var("RUST_LOG").is_err() {
         std::env::set_var("RUST_LOG", "websocket=debug,tower_http=debug")
     }
-    tracing_subscriber::fmt::fmt()
-        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
-        .init();
+    tracing_subscriber::fmt::init();
 
     // build our application with some routes
     let app = nest(