Update to the latest version of Rocket, to use rocket_contrib::Template::custom

src/routes/posts.rs

@@ -120,5 +120,5 @@ fn create(blog_name: String, data: Form<NewPostForm>, user: User, conn: DbConn)
     let act = post.create_activity(&*conn);
     broadcast(&*conn, &user, act, user.get_followers(&*conn));
 
-    Redirect::to(format!("/~/{}/{}/", blog_name, slug).as_str())
+    Redirect::to(format!("/~/{}/{}/", blog_name, slug))
 }