we're sending Envelope and transmitting Arc<Envelope>, since we're wrapping the Envelope in an Arc to transmit it, we (probably) don't need to wrap the Event in an Arc too

src/event/mod.rs

@@ -14,7 +14,7 @@ pub enum Event {
 
 pub struct Envelope {
     pub from: Option<String>,
-    pub event: Arc<Event>,
+    pub event: Event,
     pub to: Vec<String>
 }
 
@@ -22,7 +22,7 @@ impl Envelope {
     pub fn new (event: Event) -> Envelope {
         Envelope {
             from: None,
-            event: Arc::new(event),
+            event: event,
             to: vec![]
         }
     }

src/modules/echo.rs

@@ -28,7 +28,7 @@ impl Module for EchoModule {
         loop {
             match receiver.recv() {
                 Ok(envelope) => {
-                    match *envelope.event {
+                    match envelope.event {
                         Event::Message { ref message } => {
                             debug!("Received message... {:?}", message.content);
                             match split_command(&message.content) {

src/modules/echobox.rs

@@ -37,7 +37,7 @@ impl Module for EchoboxModule {
         loop {
             match receiver.recv() {
                 Ok(envelope) => {
-                    match *envelope.event {
+                    match envelope.event {
                         Event::Message { ref message } => {
                             debug!("Received message... {:?}", message.content);
                             match split_command(&message.content) {

src/modules/pvn.rs

@@ -144,7 +144,7 @@ impl Module for PvnModule {
         loop {
             match receiver.recv() {
                 Ok(envelope) => {
-                    match *envelope.event {
+                    match envelope.event {
                         Event::Message { ref message } => {
                             let command = split_command(&message.content);
                             debug!("Received message... {:?}", &message.content);

src/modules/random.rs

@@ -41,7 +41,7 @@ impl Module for RandomModule {
         loop {
             match receiver.recv() {
                 Ok(envelope) => {
-                    match *envelope.event {
+                    match envelope.event {
                         Event::Message { ref message } => {
                             debug!("Received message... {:?}", message.content);
                             match split_command(&message.content) {