diff --git a/examples/fairing.rs b/examples/fairing.rs
index 56cdd8d..814aa3c 100644
--- a/examples/fairing.rs
+++ b/examples/fairing.rs
@@ -16,7 +16,7 @@ fn main() -> Result<(), Error> {
 
     // You can also deserialize this
     let cors = rocket_cors::CorsOptions {
-        allowed_origins: allowed_origins,
+        allowed_origins,
         allowed_methods: vec![Method::Get].into_iter().map(From::from).collect(),
         allowed_headers: AllowedHeaders::some(&["Authorization", "Accept"]),
         allow_credentials: true,
diff --git a/examples/guard.rs b/examples/guard.rs
index cd3d2d0..b8faa39 100644
--- a/examples/guard.rs
+++ b/examples/guard.rs
@@ -40,7 +40,7 @@ fn main() -> Result<(), Error> {
 
     // You can also deserialize this
     let cors = rocket_cors::CorsOptions {
-        allowed_origins: allowed_origins,
+        allowed_origins,
         allowed_methods: vec![Method::Get].into_iter().map(From::from).collect(),
         allowed_headers: AllowedHeaders::some(&["Authorization", "Accept"]),
         allow_credentials: true,
diff --git a/examples/json.rs b/examples/json.rs
index e77c1d9..5cee758 100644
--- a/examples/json.rs
+++ b/examples/json.rs
@@ -16,7 +16,7 @@ fn main() {
     let allowed_origins = AllowedOrigins::some_exact(&["https://www.acme.com"]);
 
     let options = cors::CorsOptions {
-        allowed_origins: allowed_origins,
+        allowed_origins,
         allowed_methods: vec![Method::Get, Method::Post, Method::Delete]
             .into_iter()
             .map(From::from)
diff --git a/examples/manual.rs b/examples/manual.rs
index 0768d2e..db83c25 100644
--- a/examples/manual.rs
+++ b/examples/manual.rs
@@ -63,7 +63,7 @@ fn cors_options() -> CorsOptions {
 
     // You can also deserialize this
     rocket_cors::CorsOptions {
-        allowed_origins: allowed_origins,
+        allowed_origins,
         allowed_methods: vec![Method::Get].into_iter().map(From::from).collect(),
         allowed_headers: AllowedHeaders::some(&["Authorization", "Accept"]),
         allow_credentials: true,
diff --git a/examples/mix.rs b/examples/mix.rs
index 9bae94f..3f8d350 100644
--- a/examples/mix.rs
+++ b/examples/mix.rs
@@ -40,7 +40,7 @@ fn cors_options() -> CorsOptions {
 
     // You can also deserialize this
     rocket_cors::CorsOptions {
-        allowed_origins: allowed_origins,
+        allowed_origins,
         allowed_methods: vec![Method::Get].into_iter().map(From::from).collect(),
         allowed_headers: AllowedHeaders::some(&["Authorization", "Accept"]),
         allow_credentials: true,
diff --git a/src/headers.rs b/src/headers.rs
index b947fbf..6e0a099 100644
--- a/src/headers.rs
+++ b/src/headers.rs
@@ -266,7 +266,7 @@ mod tests {
         );
 
         let method = "INVALID";
-        let _ = is_err!(AccessControlRequestMethod::from_str(method));
+        is_err!(AccessControlRequestMethod::from_str(method));
     }
 
     #[test]
@@ -308,7 +308,7 @@ mod tests {
         let parsed_header = assert_matches!(outcome, Outcome::Success(s), s);
         let AccessControlRequestHeaders(parsed_headers) = parsed_header;
         let mut parsed_headers: Vec<String> =
-            parsed_headers.iter().map(|s| s.to_string()).collect();
+            parsed_headers.iter().map(ToString::to_string).collect();
         parsed_headers.sort();
         assert_eq!(
             vec!["accept-language".to_string(), "date".to_string()],
diff --git a/src/lib.rs b/src/lib.rs
index a7e323e..f845c52 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -727,9 +727,9 @@ impl AllowedHeaders {
 /// ```json
 /// {
 ///   "allowed_origins": {
-///     "Some": [
-///       "https://www.acme.com"
-///     ]
+///     "Some": {
+///         "exact": ["https://www.acme.com"]
+///     }
 ///   },
 ///   "allowed_methods": [
 ///     "POST",
@@ -1759,8 +1759,8 @@ mod tests {
             allowed_headers: AllowedHeaders::some(&[&"Authorization", "Accept"]),
             allow_credentials: true,
             expose_headers: ["Content-Type", "X-Custom"]
-                .into_iter()
-                .map(|s| s.to_string().into())
+                .iter()
+                .map(|s| s.to_string())
                 .collect(),
             ..Default::default()
         }
diff --git a/tests/fairing.rs b/tests/fairing.rs
index 943cb26..055e015 100644
--- a/tests/fairing.rs
+++ b/tests/fairing.rs
@@ -1,14 +1,14 @@
 //! This crate tests using `rocket_cors` using Fairings
 #![feature(proc_macro_hygiene, decl_macro)]
 use hyper;
-#[macro_use]
-extern crate rocket;
 
 use std::str::FromStr;
 
 use rocket::http::Method;
 use rocket::http::{Header, Status};
 use rocket::local::Client;
+use rocket::response::Body;
+use rocket::{get, routes};
 use rocket_cors::*;
 
 #[get("/")]
@@ -25,7 +25,7 @@ fn make_cors() -> Cors {
     let allowed_origins = AllowedOrigins::some_exact(&["https://www.acme.com"]);
 
     CorsOptions {
-        allowed_origins: allowed_origins,
+        allowed_origins,
         allowed_methods: vec![Method::Get].into_iter().map(From::from).collect(),
         allowed_headers: AllowedHeaders::some(&["Authorization", "Accept"]),
         allow_credentials: true,
@@ -73,7 +73,7 @@ fn smoke_test() {
 
     let mut response = req.dispatch();
     assert!(response.status().class().is_success());
-    let body_str = response.body().and_then(|body| body.into_string());
+    let body_str = response.body().and_then(Body::into_string);
     assert_eq!(body_str, Some("Hello CORS".to_string()));
 
     let origin_header = response
@@ -124,7 +124,7 @@ fn cors_get_check() {
 
     let mut response = req.dispatch();
     assert!(response.status().class().is_success());
-    let body_str = response.body().and_then(|body| body.into_string());
+    let body_str = response.body().and_then(Body::into_string);
     assert_eq!(body_str, Some("Hello CORS".to_string()));
 
     let origin_header = response
@@ -144,7 +144,7 @@ fn cors_get_no_origin() {
 
     let mut response = req.dispatch();
     assert!(response.status().class().is_success());
-    let body_str = response.body().and_then(|body| body.into_string());
+    let body_str = response.body().and_then(Body::into_string);
     assert_eq!(body_str, Some("Hello CORS".to_string()));
 }
 
diff --git a/tests/guard.rs b/tests/guard.rs
index c3010e4..d929616 100644
--- a/tests/guard.rs
+++ b/tests/guard.rs
@@ -1,8 +1,6 @@
 //! This crate tests using `rocket_cors` using the per-route handling with request guard
 #![feature(proc_macro_hygiene, decl_macro)]
 use hyper;
-#[macro_use]
-extern crate rocket;
 use rocket_cors as cors;
 
 use std::str::FromStr;
@@ -10,6 +8,8 @@ use std::str::FromStr;
 use rocket::http::Method;
 use rocket::http::{Header, Status};
 use rocket::local::Client;
+use rocket::response::Body;
+use rocket::{get, options, routes};
 use rocket::{Response, State};
 
 #[get("/")]
@@ -63,7 +63,7 @@ fn make_cors() -> cors::Cors {
     let allowed_origins = cors::AllowedOrigins::some_exact(&["https://www.acme.com"]);
 
     cors::CorsOptions {
-        allowed_origins: allowed_origins,
+        allowed_origins,
         allowed_methods: vec![Method::Get].into_iter().map(From::from).collect(),
         allowed_headers: cors::AllowedHeaders::some(&["Authorization", "Accept"]),
         allow_credentials: true,
@@ -119,7 +119,7 @@ fn smoke_test() {
 
     let mut response = req.dispatch();
     assert!(response.status().class().is_success());
-    let body_str = response.body().and_then(|body| body.into_string());
+    let body_str = response.body().and_then(Body::into_string);
     assert_eq!(body_str, Some("Hello CORS".to_string()));
 
     let origin_header = response
@@ -205,7 +205,7 @@ fn cors_get_check() {
 
     let mut response = req.dispatch();
     assert!(response.status().class().is_success());
-    let body_str = response.body().and_then(|body| body.into_string());
+    let body_str = response.body().and_then(Body::into_string);
     assert_eq!(body_str, Some("Hello CORS".to_string()));
 
     let origin_header = response
@@ -226,7 +226,7 @@ fn cors_get_no_origin() {
 
     let mut response = req.dispatch();
     assert!(response.status().class().is_success());
-    let body_str = response.body().and_then(|body| body.into_string());
+    let body_str = response.body().and_then(Body::into_string);
     assert_eq!(body_str, Some("Hello CORS".to_string()));
     assert!(response
         .headers()
@@ -408,7 +408,7 @@ fn overridden_options_routes_are_used() {
         .header(request_headers);
 
     let mut response = req.dispatch();
-    let body_str = response.body().and_then(|body| body.into_string());
+    let body_str = response.body().and_then(Body::into_string);
     assert!(response.status().class().is_success());
     assert_eq!(body_str, Some("Manual CORS Preflight".to_string()));
 
diff --git a/tests/headers.rs b/tests/headers.rs
index c6b63f8..603c25c 100644
--- a/tests/headers.rs
+++ b/tests/headers.rs
@@ -1,14 +1,14 @@
 //! This crate tests that all the request headers are parsed correctly in the round trip
 #![feature(proc_macro_hygiene, decl_macro)]
 use hyper;
-#[macro_use]
-extern crate rocket;
 
 use std::ops::Deref;
 use std::str::FromStr;
 
 use rocket::http::Header;
 use rocket::local::Client;
+use rocket::response::Body;
+use rocket::{get, routes};
 use rocket_cors::headers::*;
 
 #[get("/request_headers")]
@@ -53,7 +53,7 @@ fn request_headers_round_trip_smoke_test() {
     assert!(response.status().class().is_success());
     let body_str = response
         .body()
-        .and_then(|body| body.into_string())
+        .and_then(Body::into_string)
         .expect("Non-empty body");
     let expected_body = r#"https://foo.bar.xyz
 GET
diff --git a/tests/manual.rs b/tests/manual.rs
index 54b08ba..db4cc83 100644
--- a/tests/manual.rs
+++ b/tests/manual.rs
@@ -1,8 +1,6 @@
 //! This crate tests using `rocket_cors` using manual mode
 #![feature(proc_macro_hygiene, decl_macro)]
 use hyper;
-#[macro_use]
-extern crate rocket;
 
 use std::str::FromStr;
 
@@ -11,6 +9,8 @@ use rocket::http::{Header, Status};
 use rocket::local::Client;
 use rocket::response::Responder;
 use rocket::State;
+use rocket::{get, options, routes};
+use rocket::response::Body;
 use rocket_cors::*;
 
 /// Using a borrowed `Cors`
@@ -23,7 +23,7 @@ fn cors(options: State<'_, Cors>) -> impl Responder<'_> {
 
 #[get("/panic")]
 fn panicking_route(options: State<'_, Cors>) -> impl Responder<'_> {
-    options.inner().respond_borrowed(|_| -> () {
+    options.inner().respond_borrowed(|_| {
         panic!("This route will panic");
     })
 }
@@ -69,7 +69,7 @@ fn make_cors_options() -> CorsOptions {
     let allowed_origins = AllowedOrigins::some_exact(&["https://www.acme.com"]);
 
     CorsOptions {
-        allowed_origins: allowed_origins,
+        allowed_origins,
         allowed_methods: vec![Method::Get].into_iter().map(From::from).collect(),
         allowed_headers: AllowedHeaders::some(&["Authorization", "Accept"]),
         allow_credentials: true,
@@ -81,7 +81,7 @@ fn make_different_cors_options() -> CorsOptions {
     let allowed_origins = AllowedOrigins::some_exact(&["https://www.example.com"]);
 
     CorsOptions {
-        allowed_origins: allowed_origins,
+        allowed_origins,
         allowed_methods: vec![Method::Get].into_iter().map(From::from).collect(),
         allowed_headers: AllowedHeaders::some(&["Authorization", "Accept"]),
         allow_credentials: true,
@@ -129,7 +129,7 @@ fn smoke_test() {
 
     let mut response = req.dispatch();
     assert!(response.status().class().is_success());
-    let body_str = response.body().and_then(|body| body.into_string());
+    let body_str = response.body().and_then(Body::into_string);
     assert_eq!(body_str, Some("Hello CORS".to_string()));
 
     let origin_header = response
@@ -180,7 +180,7 @@ fn cors_get_borrowed_check() {
 
     let mut response = req.dispatch();
     assert!(response.status().class().is_success());
-    let body_str = response.body().and_then(|body| body.into_string());
+    let body_str = response.body().and_then(Body::into_string);
     assert_eq!(body_str, Some("Hello CORS".to_string()));
 
     let origin_header = response
@@ -200,7 +200,7 @@ fn cors_get_no_origin() {
 
     let mut response = req.dispatch();
     assert!(response.status().class().is_success());
-    let body_str = response.body().and_then(|body| body.into_string());
+    let body_str = response.body().and_then(Body::into_string);
     assert_eq!(body_str, Some("Hello CORS".to_string()));
 }
 
@@ -378,7 +378,7 @@ fn cors_options_owned_check() {
         .header(request_headers);
 
     let mut response = req.dispatch();
-    let body_str = response.body().and_then(|body| body.into_string());
+    let body_str = response.body().and_then(Body::into_string);
     assert!(response.status().class().is_success());
     assert_eq!(body_str, Some("Manual CORS Preflight".to_string()));
 
@@ -404,7 +404,7 @@ fn cors_get_owned_check() {
 
     let mut response = req.dispatch();
     assert!(response.status().class().is_success());
-    let body_str = response.body().and_then(|body| body.into_string());
+    let body_str = response.body().and_then(Body::into_string);
     assert_eq!(body_str, Some("Hello CORS Owned".to_string()));
 
     let origin_header = response
diff --git a/tests/mix.rs b/tests/mix.rs
index 25dd65a..08ffbf0 100644
--- a/tests/mix.rs
+++ b/tests/mix.rs
@@ -4,15 +4,15 @@
 //! `ping` route that you want to allow all Origins to access.
 #![feature(proc_macro_hygiene, decl_macro)]
 use hyper;
-#[macro_use]
-extern crate rocket;
 use rocket_cors;
 
 use std::str::FromStr;
 
 use rocket::http::{Header, Method, Status};
 use rocket::local::Client;
+use rocket::response::Body;
 use rocket::response::Responder;
+use rocket::{get, options, routes};
 
 use rocket_cors::{AllowedHeaders, AllowedOrigins, CorsOptions, Guard};
 
@@ -44,7 +44,7 @@ fn cors_options() -> CorsOptions {
 
     // You can also deserialize this
     rocket_cors::CorsOptions {
-        allowed_origins: allowed_origins,
+        allowed_origins,
         allowed_methods: vec![Method::Get].into_iter().map(From::from).collect(),
         allowed_headers: AllowedHeaders::some(&["Authorization", "Accept"]),
         allow_credentials: true,
@@ -100,7 +100,7 @@ fn smoke_test() {
 
     let mut response = req.dispatch();
     assert!(response.status().class().is_success());
-    let body_str = response.body().and_then(|body| body.into_string());
+    let body_str = response.body().and_then(Body::into_string);
     assert_eq!(body_str, Some("Hello CORS!".to_string()));
 
     let origin_header = response
@@ -151,7 +151,7 @@ fn cors_get_check() {
 
     let mut response = req.dispatch();
     assert!(response.status().class().is_success());
-    let body_str = response.body().and_then(|body| body.into_string());
+    let body_str = response.body().and_then(Body::into_string);
     assert_eq!(body_str, Some("Hello CORS!".to_string()));
 
     let origin_header = response
@@ -171,7 +171,7 @@ fn cors_get_no_origin() {
 
     let mut response = req.dispatch();
     assert!(response.status().class().is_success());
-    let body_str = response.body().and_then(|body| body.into_string());
+    let body_str = response.body().and_then(Body::into_string);
     assert_eq!(body_str, Some("Hello CORS!".to_string()));
 }
 
@@ -333,7 +333,7 @@ fn cors_get_ping_check() {
 
     let mut response = req.dispatch();
     assert!(response.status().class().is_success());
-    let body_str = response.body().and_then(|body| body.into_string());
+    let body_str = response.body().and_then(Body::into_string);
     assert_eq!(body_str, Some("Pong!".to_string()));
 
     let origin_header = response