Fix various warnings generated by build: (#43)

-removed conservative_impl_trait as it is no longer needed with the current compiler.
-removed allow(unmounted_route) as rocket no longer provides this linter.

src/lib.rs

@@ -1030,6 +1030,7 @@ pub struct Cors {
     /// [Resource Processing Model](https://www.w3.org/TR/cors/#resource-processing-model).
     ///
     /// Defaults to `All`.
+    ///
     #[cfg_attr(feature = "serialization", serde(default))]
     pub allowed_origins: AllowedOrigins,
     /// The list of methods which the allowed origins are allowed to access for

tests/manual.rs

@@ -49,7 +49,6 @@ fn owned<'r>() -> impl Responder<'r> {
 // The following routes tests that the routes can be compiled with manual CORS
 
 /// `Responder` with String
-#[allow(unmounted_route)]
 #[get("/")]
 fn responder_string(options: State<Cors>) -> impl Responder {
     options
@@ -59,7 +58,6 @@ fn responder_string(options: State<Cors>) -> impl Responder {
 
 struct TestState;
 /// Borrow something else from Rocket with lifetime `'r`
-#[allow(unmounted_route)]
 #[get("/")]
 fn borrow<'r>(options: State<'r, Cors>, test_state: State<'r, TestState>) -> impl Responder<'r> {
     let borrow = test_state.inner();