3 files changed, 8 insertions, 6 deletions
diff --git a/components/script/dom/worker.rs b/components/script/dom/worker.rs
index 3822e4e538c..8fa36436c19 100644
--- a/components/script/dom/worker.rs
+++ b/components/script/dom/worker.rs
@@ -115,7 +115,8 @@ impl WorkerMessageHandler {
 }
 
 impl Runnable for WorkerMessageHandler {
-    fn handler(&self){
-        Worker::handle_message(self.addr.clone(), self.data);
+    fn handler(self: Box<WorkerMessageHandler>) {
+        let this = *self;
+        Worker::handle_message(this.addr, this.data);
     }
 }
diff --git a/components/script/dom/xmlhttprequest.rs b/components/script/dom/xmlhttprequest.rs
index beee21798af..a5d5c767a72 100644
--- a/components/script/dom/xmlhttprequest.rs
+++ b/components/script/dom/xmlhttprequest.rs
@@ -85,8 +85,9 @@ impl XHRProgressHandler {
 }
 
 impl Runnable for XHRProgressHandler {
-    fn handler(&self) {
-        XMLHttpRequest::handle_progress(self.addr.clone(), self.progress.clone());
+    fn handler(self: Box<XHRProgressHandler>) {
+        let this = *self;
+        XMLHttpRequest::handle_progress(this.addr, this.progress);
     }
 }
 
diff --git a/components/script/script_task.rs b/components/script/script_task.rs
index 4783d8539f4..46488446b9d 100644
--- a/components/script/script_task.rs
+++ b/components/script/script_task.rs
@@ -96,7 +96,7 @@ pub enum TimerSource {
 }
 
 pub trait Runnable {
-    fn handler(&self);
+    fn handler(self: Box<Self>);
 }
 
 /// Messages used to control script event loops, such as ScriptTask and
@@ -1385,7 +1385,7 @@ impl DocumentProgressHandler {
 }
 
 impl Runnable for DocumentProgressHandler {
-    fn handler(&self) {
+    fn handler(self: Box<DocumentProgressHandler>) {
         match self.task {
             DocumentProgressTask::DOMContentLoaded => {
                 self.dispatch_dom_content_loaded();