diff --git a/components/net/http_loader.rs b/components/net/http_loader.rs
index 6d83d34eaa8..7ca359e9ecb 100644
--- a/components/net/http_loader.rs
+++ b/components/net/http_loader.rs
@@ -3,26 +3,18 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use devtools_traits::{ChromeToDevtoolsControlMsg, DevtoolsControlMsg, NetworkEvent};
-use hsts::{HSTSList, secure_url};
+use hsts::secure_url;
 use mime_classifier::MIMEClassifier;
 use net_traits::ProgressMsg::{Payload, Done};
 use net_traits::hosts::replace_hosts;
 use net_traits::{ControlMsg, CookieSource, LoadData, Metadata, LoadConsumer, IncludeSubdomains};
 use resource_task::{start_sending_opt, start_sending_sniffed_opt};
-use hsts::secure_url;
-use file_loader;
 
 use file_loader;
-use ipc_channel::ipc::{self, IpcSender};
-use log;
 use std::collections::HashSet;
 use flate2::read::{DeflateDecoder, GzDecoder};
-use hyper::Error as HttpError;
-use hyper::client::Request;
-use hyper::header::StrictTransportSecurity;
-use hyper::header::{AcceptEncoding, Accept, ContentLength, ContentType, Host, Location, qitem, Quality, QualityItem};
-use hyper::client::{Request, Response};
 use hyper::header::{AcceptEncoding, Accept, ContentLength, ContentType, Host};
+use hyper::client::{Request, Response};
 use hyper::header::{Location, qitem, StrictTransportSecurity};
 use hyper::header::{Quality, QualityItem, Headers, ContentEncoding, Encoding};
 use hyper::Error as HttpError;
@@ -34,22 +26,17 @@ use hyper::status::{StatusCode, StatusClass};
 use ipc_channel::ipc::{self, IpcSender};
 use log;
 use openssl::ssl::{SslContext, SslMethod, SSL_VERIFY_PEER};
-use std::collections::HashSet;
 use std::error::Error;
 use std::io::{self, Read, Write};
 use std::sync::Arc;
 use std::sync::mpsc::{Sender, channel};
-use util::task::spawn_named;
-use util::resource_files::resources_dir_path;
 use url::{Url, UrlParser};
-use util::opts;
 use util::resource_files::resources_dir_path;
 use util::task::spawn_named;
 
 use std::borrow::ToOwned;
 use std::boxed::FnBox;
 use uuid;
-use std::fs::File;
 
 pub fn factory(resource_mgr_chan: IpcSender<ControlMsg>,
                devtools_chan: Option<Sender<DevtoolsControlMsg>>)
diff --git a/tests/unit/net/http_loader.rs b/tests/unit/net/http_loader.rs
index d928f6d1eaf..46c95330b0b 100644
--- a/tests/unit/net/http_loader.rs
+++ b/tests/unit/net/http_loader.rs
@@ -227,7 +227,7 @@ fn test_load_when_redirecting_from_a_post_should_rewrite_next_request_as_get() {
     }
 
     let url = Url::parse("http://mozilla.com").unwrap();
-    let resource_mgr = new_resource_task(None, None);
+    let resource_mgr = new_resource_task("Test-agent".to_string(), None);
     let mut load_data = LoadData::new(url.clone(), None);
     load_data.method = Method::Post;
 
@@ -253,7 +253,7 @@ fn test_load_should_decode_the_response_as_deflate_when_response_headers_have_co
     }
 
     let url = Url::parse("http://mozilla.com").unwrap();
-    let resource_mgr = new_resource_task(None, None);
+    let resource_mgr = new_resource_task("Test-agent".to_string(), None);
     let load_data = LoadData::new(url.clone(), None);
     let mut response = load::<MockRequest>(load_data, resource_mgr.clone(), None, &Factory).unwrap();
 
@@ -279,7 +279,7 @@ fn test_load_should_decode_the_response_as_gzip_when_response_headers_have_conte
     }
 
     let url = Url::parse("http://mozilla.com").unwrap();
-    let resource_mgr = new_resource_task(None, None);
+    let resource_mgr = new_resource_task("Test-agent".to_string(), None);
     let load_data = LoadData::new(url.clone(), None);
     let mut response = load::<MockRequest>(load_data, resource_mgr.clone(), None, &Factory).unwrap();
 
@@ -313,7 +313,7 @@ fn test_load_doesnt_send_request_body_on_any_redirect() {
     }
 
     let url = Url::parse("http://mozilla.com").unwrap();
-    let resource_mgr = new_resource_task(None, None);
+    let resource_mgr = new_resource_task("Test-agent".to_string(), None);
     let mut load_data = LoadData::new(url.clone(), None);
     load_data.data = Some(<[_]>::to_vec("Body on POST!".as_bytes()));
 
@@ -337,7 +337,7 @@ fn test_load_doesnt_add_host_to_sts_list_when_url_is_http_even_if_sts_headers_ar
     }
 
     let url = Url::parse("http://mozilla.com").unwrap();
-    let resource_mgr = new_resource_task(None, None);
+    let resource_mgr = new_resource_task("Test-agent".to_string(), None);
 
     let load_data = LoadData::new(url.clone(), None);
 
@@ -365,7 +365,7 @@ fn test_load_adds_host_to_sts_list_when_url_is_https_and_sts_headers_are_present
     }
 
     let url = Url::parse("https://mozilla.com").unwrap();
-    let resource_mgr = new_resource_task(None, None);
+    let resource_mgr = new_resource_task("Test-agent".to_string(), None);
 
     let load_data = LoadData::new(url.clone(), None);
 
@@ -393,7 +393,7 @@ fn test_load_sets_cookies_in_the_resource_manager_when_it_get_set_cookie_header_
     }
 
     let url = Url::parse("http://mozilla.com").unwrap();
-    let resource_mgr = new_resource_task(None, None);
+    let resource_mgr = new_resource_task("Test-agent".to_string(), None);
     assert_cookie_for_domain(&resource_mgr, "http://mozilla.com", "");
 
     let load_data = LoadData::new(url.clone(), None);
@@ -406,7 +406,7 @@ fn test_load_sets_cookies_in_the_resource_manager_when_it_get_set_cookie_header_
 #[test]
 fn test_load_sets_requests_cookies_header_for_url_by_getting_cookies_from_the_resource_manager() {
     let url = Url::parse("http://mozilla.com").unwrap();
-    let resource_mgr = new_resource_task(None, None);
+    let resource_mgr = new_resource_task("Test-agent".to_string(), None);
     resource_mgr.send(ControlMsg::SetCookiesForUrl(Url::parse("http://mozilla.com").unwrap(),
                                                    "mozillaIs=theBest".to_string(),
                                                    CookieSource::HTTP)).unwrap();
@@ -430,7 +430,7 @@ fn test_load_sets_content_length_to_length_of_request_body() {
     let content = "This is a request body";
 
     let url = Url::parse("http://mozilla.com").unwrap();
-    let resource_mgr = new_resource_task(None, None);
+    let resource_mgr = new_resource_task("Test-agent".to_string(), None);
     let mut load_data = LoadData::new(url.clone(), None);
     load_data.data = Some(<[_]>::to_vec(content.as_bytes()));
 
@@ -455,7 +455,7 @@ fn test_load_sets_default_accept_to_html_xhtml_xml_and_then_anything_else() {
     );
 
     let url = Url::parse("http://mozilla.com").unwrap();
-    let resource_mgr = new_resource_task(None, None);
+    let resource_mgr = new_resource_task("Test-agent".to_string(), None);
     let mut load_data = LoadData::new(url.clone(), None);
     load_data.data = Some(<[_]>::to_vec("Yay!".as_bytes()));
 
@@ -471,7 +471,7 @@ fn test_load_sets_default_accept_encoding_to_gzip_and_deflate() {
     accept_encoding_headers.set_raw("Accept-Encoding".to_owned(), vec![b"gzip, deflate".to_vec()]);
 
     let url = Url::parse("http://mozilla.com").unwrap();
-    let resource_mgr = new_resource_task(None, None);
+    let resource_mgr = new_resource_task("Test-agent".to_string(), None);
     let mut load_data = LoadData::new(url.clone(), None);
     load_data.data = Some(<[_]>::to_vec("Yay!".as_bytes()));
 
@@ -500,7 +500,7 @@ fn test_load_errors_when_there_a_redirect_loop() {
     }
 
     let url = Url::parse("http://mozilla.com").unwrap();
-    let resource_mgr = new_resource_task(None, None);
+    let resource_mgr = new_resource_task("Test-agent".to_string(), None);
     let load_data = LoadData::new(url.clone(), None);
 
     match load::<MockRequest>(load_data, resource_mgr, None, &Factory) {
@@ -528,7 +528,7 @@ fn test_load_errors_when_there_is_too_many_redirects() {
     }
 
     let url = Url::parse("http://mozilla.com").unwrap();
-    let resource_mgr = new_resource_task(None, None);
+    let resource_mgr = new_resource_task("Test-agent".to_string(), None);
     let load_data = LoadData::new(url.clone(), None);
 
     match load::<MockRequest>(load_data, resource_mgr, None, &Factory) {
@@ -564,7 +564,7 @@ fn test_load_follows_a_redirect() {
     }
 
     let url = Url::parse("http://mozilla.com").unwrap();
-    let resource_mgr = new_resource_task(None, None);
+    let resource_mgr = new_resource_task("Test-agent".to_string(), None);
     let load_data = LoadData::new(url.clone(), None);
 
     match load::<MockRequest>(load_data, resource_mgr, None, &Factory) {
@@ -589,7 +589,7 @@ impl HttpRequestFactory for DontConnectFactory {
 #[test]
 fn test_load_errors_when_scheme_is_not_http_or_https() {
     let url = Url::parse("ftp://not-supported").unwrap();
-    let resource_mgr = new_resource_task(None, None);
+    let resource_mgr = new_resource_task("Test-agent".to_string(), None);
     let load_data = LoadData::new(url.clone(), None);
 
     match load::<MockRequest>(load_data, resource_mgr, None, &DontConnectFactory) {
@@ -601,7 +601,7 @@ fn test_load_errors_when_scheme_is_not_http_or_https() {
 #[test]
 fn test_load_errors_when_viewing_source_and_inner_url_scheme_is_not_http_or_https() {
     let url = Url::parse("view-source:ftp://not-supported").unwrap();
-    let resource_mgr = new_resource_task(None, None);
+    let resource_mgr = new_resource_task("Test-agent".to_string(), None);
     let load_data = LoadData::new(url.clone(), None);
 
     match load::<MockRequest>(load_data, resource_mgr, None, &DontConnectFactory) {