feat(asb): Warn instead of bail, if we cannot listen on a particular …

…network interface

The reason for this is to ensure the asb does not crash if the websocket listen address is still present in the config file. Support for it has been removed.

swap/src/bin/asb.rs

@@ -185,8 +185,9 @@ pub async fn main() -> Result<()> {
             )?;
 
             for listen in config.network.listen.clone() {
-                Swarm::listen_on(&mut swarm, listen.clone())
-                    .with_context(|| format!("Failed to listen on network interface {}", listen))?;
+                if let Err(e) = Swarm::listen_on(&mut swarm, listen.clone()) {
+                    tracing::warn!("Failed to listen on network interface {}: {}. Consider removing it from the config.", listen, e);
+                }
             }
 
             tracing::info!(peer_id = %swarm.local_peer_id(), "Network layer initialized");