Final touches

Cargo.toml

@@ -23,7 +23,8 @@ disable-metrics = []
 web-app = ["axum", "axum-server", "base64", "clap", "comfy-table", "enable-serde", "hyper", "hyper-rustls", "rcgen", "rustls", "rustls-pemfile", "time", "tokio-rustls", "toml", "tower", "tower-http"]
 test-fixture = ["enable-serde", "weak-field"]
 # Include observability instruments that detect lack of progress inside MPC. If there is a bug that leads to helper
-# miscommunication, this feature helps to detect it. Turning it on hurts performance a bit.
+# miscommunication, this feature helps to detect it. Turning it on has some cost.
+# If "shuttle" feature is enabled, turning this on has no effect.
 stall-detection = []
 shuttle = ["shuttle-crate", "test-fixture"]
 debug-trace = ["tracing/max_level_trace", "tracing/release_max_level_debug"]

src/helpers/gateway/mod.rs

@@ -11,7 +11,7 @@ pub(super) use send::SendingEnd;
 #[cfg(all(test, feature = "shuttle"))]
 use shuttle::future as tokio;
 #[cfg(feature = "stall-detection")]
-pub(super) use {stall_detection::InstrumentedGateway};
+pub(super) use stall_detection::InstrumentedGateway;
 
 use crate::{
     helpers::{

src/helpers/gateway/send.rs

@@ -27,7 +27,6 @@ pub struct SendingEnd<M: Message> {
     _phantom: PhantomData<M>,
 }
 
-
 /// Sending channels, indexed by (role, step).
 #[derive(Default, Clone)]
 pub(super) struct GatewaySenders {