diff --git a/server/Cargo.toml b/server/Cargo.toml
index d0356f6..e650359 100644
--- a/server/Cargo.toml
+++ b/server/Cargo.toml
@@ -10,5 +10,5 @@ tonic                   = { version = "0.13", features = ["transport"] }
 anyhow                  = "1.0"
 navka_common            = { path = "../common" }
 tracing                 = { version = "0.1", features = ["std"] }
-tracing-subscriber      = "0.3"
+tracing-subscriber      = { version = "0.3", features = ["env-filter", "fmt"] }
 libc                    = "0.2" 
diff --git a/server/src/main.rs b/server/src/main.rs
index c8263e2..87400a2 100644
--- a/server/src/main.rs
+++ b/server/src/main.rs
@@ -49,7 +49,7 @@ impl Relay for Handler {
                     }
                     _ => {
                         error!(?msg.kind, "⚠️  malformed packet");
-                        let bad_len = match &msg.kind {
+                        let _bad_len = match &msg.kind {
                             Some(hid_report::Kind::KeyboardReport(v)) => v.len(),
                             Some(hid_report::Kind::MouseReport(v))    => v.len(),
                             _                                                => 0,
@@ -70,8 +70,7 @@ impl Relay for Handler {
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
-    tracing_subscriber::fmt()
-    .with_env_filter(
+    fmt().with_env_filter(
         // honour RUST_LOG but fall back to very chatty defaults
         EnvFilter::try_from_default_env().unwrap_or_else(|_| {
             EnvFilter::new(