Fix clippy linting issues

src/http_relay.rs

@@ -33,7 +33,7 @@ impl Relay for HttpRelay {
             request = request.header("X-Debug-Pin", debug_pin);
         }
 
-        let _ = tokio::spawn(async move {
+        let result = tokio::spawn(async move {
             let response = match request.send().await {
                 Ok(response) => response,
                 Err(error) => {
@@ -58,5 +58,7 @@ impl Relay for HttpRelay {
                 }
             }
         });
+
+        drop(result);
     }
 }

src/lib.rs

@@ -2,15 +2,13 @@
 #![deny(
     warnings,
     bad_style,
-    const_err,
     dead_code,
     improper_ctypes,
     non_shorthand_field_patterns,
     no_mangle_generic_items,
     overflowing_literals,
     path_statements,
     patterns_in_fns_without_body,
-    private_in_public,
     unconditional_recursion,
     unused,
     unused_allocation,

src/udp_relay.rs

@@ -50,7 +50,9 @@ impl Relay for UdpRelay {
     fn transport(&self, _: Metadata, serialized_event: Vec<u8>) {
         let udp_socket = self.udp_socket.clone();
 
-        let _ = tokio::spawn(async move { udp_socket.send(&serialized_event).await });
+        let result = tokio::spawn(async move { udp_socket.send(&serialized_event).await });
+
+        drop(result);
     }
 }