basic-router: Update.

basic-router/Cargo.toml

@@ -2,5 +2,6 @@
 name = "basic-router"
 version = "0.1.0"
 authors = ["You <you@example.com>"]
+edition = "2018"
 
 [dependencies]

basic-router/src/lib.rs

@@ -15,7 +15,7 @@ struct Response {
     body: Vec<u8>
 }
 
-type BoxedCallback = Box<Fn(&Request) -> Response>;
+type BoxedCallback = Box<dyn Fn(&Request) -> Response>;
 
 struct BasicRouter {
     routes: HashMap<String, BoxedCallback>
@@ -35,6 +35,7 @@ impl BasicRouter {
     }
 }
 
+
 impl BasicRouter {
     fn handle_request(&self, request: &Request) -> Response {
         match self.routes.get(&request.url) {