fix clippy lints

src/lib.rs

@@ -8,10 +8,7 @@
 //!
 //! ```
 //! // requires feature: `ureq = { version = "*", features = ["json"] }`
-//! #[macro_use]
-//! extern crate ureq;
-//!
-//! fn main() {
+//! use ureq::json;
 //! // sync post request of some json.
 //! let resp = ureq::post("https://myapi.acme.com/ingest")
 //!     .set("X-My-Header", "Secret")
@@ -24,7 +21,6 @@
 //! if resp.ok() {
 //!   // ....
 //! }
-//! }
 //! ```
 //!
 //! # Plain requests

src/request.rs

@@ -140,15 +140,10 @@ impl Request {
     /// The `Content-Length` header is implicitly set to the length of the serialized value.
     ///
     /// ```
-    /// #[macro_use]
-    /// extern crate ureq;
-    ///
-    /// fn main() {
     /// let body = b"Hello world!";
     /// let r = ureq::post("/my_page")
     ///     .send_bytes(body);
     /// println!("{:?}", r);
-    /// }
     /// ```
     pub fn send_bytes(&mut self, data: &[u8]) -> Response {
         self.do_call(Payload::Bytes(data.to_owned()))

src/unit.rs

@@ -338,7 +338,7 @@ fn save_cookies(unit: &Unit, resp: &Response) {
     if let Some(add_jar) = state.as_mut().map(|state| &mut state.jar) {
         for raw_cookie in cookies.iter() {
             let to_parse = if raw_cookie.to_lowercase().contains("domain=") {
-                raw_cookie.to_string()
+                (*raw_cookie).to_string()
             } else {
                 let host = &unit.url.host_str().unwrap_or(DEFAULT_HOST).to_string();
                 format!("{}; Domain={}", raw_cookie, host)