remove useless doctest main fns

actix-files/src/named.rs

@@ -96,18 +96,18 @@ impl NamedFile {
     ///
     /// # Examples
     /// ```ignore
+    /// use std::{
+    ///     io::{self, Write as _},
+    ///     env,
+    ///     fs::File
+    /// };
     /// use actix_files::NamedFile;
-    /// use std::io::{self, Write};
-    /// use std::env;
-    /// use std::fs::File;
     ///
-    /// fn main() -> io::Result<()> {
     /// let mut file = File::create("foo.txt")?;
     /// file.write_all(b"Hello, world!")?;
     /// let named_file = NamedFile::from_file(file, "bar.txt")?;
     /// # std::fs::remove_file("foo.txt");
     /// Ok(())
-    /// }
     /// ```
     pub fn from_file<P: AsRef<Path>>(file: File, path: P) -> io::Result<NamedFile> {
         let path = path.as_ref().to_path_buf();

actix-web/src/app.rs

@@ -290,12 +290,10 @@ where
     ///     Ok(HttpResponse::Ok().into())
     /// }
     ///
-    /// fn main() {
     /// let app = App::new()
     ///     .service(web::resource("/index.html").route(
     ///         web::get().to(index)))
     ///     .external_resource("youtube", "https://youtube.com/watch/{video_id}");
-    /// }
     /// ```
     pub fn external_resource<N, U>(mut self, name: N, url: U) -> Self
     where

actix-web/src/extract.rs

@@ -118,12 +118,10 @@ pub trait FromRequest: Sized {
 ///     }
 /// }
 ///
-/// fn main() {
 /// let app = App::new().service(
 ///     web::resource("/users/:first").route(
 ///         web::post().to(index))
 /// );
-/// }
 /// ```
 impl<T> FromRequest for Option<T>
 where
@@ -205,11 +203,9 @@ where
 ///     }
 /// }
 ///
-/// fn main() {
 /// let app = App::new().service(
 ///     web::resource("/users/:first").route(web::post().to(index))
 /// );
-/// }
 /// ```
 impl<T, E> FromRequest for Result<T, E>
 where

actix-web/src/request.rs

@@ -407,12 +407,10 @@ impl Drop for HttpRequest {
 ///    format!("Got thing: {:?}", req)
 /// }
 ///
-/// fn main() {
 /// let app = App::new().service(
 ///     web::resource("/users/{first}").route(
 ///         web::get().to(index))
 /// );
-/// }
 /// ```
 impl FromRequest for HttpRequest {
     type Error = Error;

actix-web/src/resource.rs

@@ -93,7 +93,6 @@ where
     ///     "Welcome!"
     /// }
     ///
-    /// fn main() {
     /// let app = App::new()
     ///     .service(
     ///         web::resource("/app")
@@ -105,7 +104,6 @@ where
     ///             .guard(guard::Header("content-type", "text/json"))
     ///             .route(web::get().to(|| HttpResponse::MethodNotAllowed()))
     ///     );
-    /// }
     /// ```
     pub fn guard<G: Guard + 'static>(mut self, guard: G) -> Self {
         self.guards.push(Box::new(guard));
@@ -137,14 +135,13 @@ where
     /// ```
     /// use actix_web::{web, guard, App};
     ///
-    /// fn main() {
     /// let app = App::new().service(
     ///     web::resource("/container/")
     ///          .route(web::get().to(get_handler))
     ///          .route(web::post().to(post_handler))
     ///          .route(web::delete().to(delete_handler))
     /// );
-    /// }
+    ///
     /// # async fn get_handler() -> impl actix_web::Responder { actix_web::HttpResponse::Ok() }
     /// # async fn post_handler() -> impl actix_web::Responder { actix_web::HttpResponse::Ok() }
     /// # async fn delete_handler() -> impl actix_web::Responder { actix_web::HttpResponse::Ok() }