Use rocket 0.5-rc1, remove rocket-contrib (#672)

* Use rocket 0.5-rc1, remove rocket-contrib

* Revert thread_rng

* Continue on error for beta as well

* Add Drazen to authors

* Remain paranoid for unstable crates

* fmt again :/

* Most paranoid versions

mixnode/src/node/http/description.rs

@@ -1,9 +1,9 @@
 use crate::node::node_description::NodeDescription;
+use rocket::serde::json::Json;
 use rocket::State;
-use rocket_contrib::json::Json;
 
 /// Returns a description of the node and why someone might want to delegate stake to it.
 #[get("/description")]
-pub(crate) fn description(description: State<NodeDescription>) -> Json<NodeDescription> {
+pub(crate) fn description(description: &State<NodeDescription>) -> Json<NodeDescription> {
     Json(description.inner().clone())
 }

mixnode/src/node/http/stats.rs

@@ -1,6 +1,6 @@
 use crate::node::node_statistics::{NodeStats, NodeStatsSimple, NodeStatsWrapper};
+use rocket::serde::json::Json;
 use rocket::State;
-use rocket_contrib::json::Json;
 use serde::Serialize;
 
 #[derive(Serialize)]
@@ -13,7 +13,7 @@ pub(crate) enum NodeStatsResponse {
 /// Returns a running stats of the node.
 #[get("/stats?<debug>")]
 pub(crate) async fn stats(
-    stats: State<'_, NodeStatsWrapper>,
+    stats: &State<NodeStatsWrapper>,
     debug: Option<bool>,
 ) -> Json<NodeStatsResponse> {
     let snapshot_data = stats.clone_data().await;

mixnode/src/node/http/verloc.rs

@@ -1,6 +1,6 @@
 use mixnode_common::verloc::{AtomicVerlocResult, VerlocResult};
+use rocket::serde::json::Json;
 use rocket::State;
-use rocket_contrib::json::Json;
 
 pub(crate) struct VerlocState {
     shared: AtomicVerlocResult,
@@ -17,7 +17,7 @@ impl VerlocState {
 /// Provides verifiable location (verloc) measurements for this mixnode - a list of the
 /// round-trip times, in milliseconds, for all other mixnodes that this node knows about.
 #[get("/verloc")]
-pub(crate) async fn verloc(state: State<'_, VerlocState>) -> Json<VerlocResult> {
+pub(crate) async fn verloc(state: &State<VerlocState>) -> Json<VerlocResult> {
     // since it's impossible to get a mutable reference to the state, we can't cache any results outside the lock : (
     Json(state.shared.clone_data().await)
 }