Undo build failure test, fix linting

crates/protocol/src/lib.rs

@@ -1,7 +1,5 @@
 pub mod message;
 pub mod resource;
 
-hello
-
 #[cfg(test)]
 pub mod test_data;

crates/protocol/src/message/close.rs

@@ -19,7 +19,7 @@ impl Close {
             to,
             kind: MessageKind::Close,
             id: MessageKind::Close.typesafe_id()?,
-            exchange_id: exchange_id,
+            exchange_id,
             created_at: Utc::now(),
         };
 

crates/protocol/src/message/order.rs

@@ -17,7 +17,7 @@ impl Order {
             to,
             kind: MessageKind::Order,
             id: MessageKind::Order.typesafe_id()?,
-            exchange_id: exchange_id,
+            exchange_id,
             created_at: Utc::now(),
         };
 

crates/protocol/src/message/order_status.rs

@@ -18,7 +18,7 @@ impl OrderStatus {
             to,
             kind: MessageKind::OrderStatus,
             id: MessageKind::OrderStatus.typesafe_id()?,
-            exchange_id: exchange_id,
+            exchange_id,
             created_at: Utc::now(),
         };
 

crates/protocol/src/resource/offering.rs

@@ -82,15 +82,12 @@ pub struct PaymentMethod {
 
 impl PaymentMethod {
     pub fn required_payment_details_schema(&self) -> Option<JSONSchema> {
-        self.required_payment_details
-            .as_ref()
-            .map(|json| {
-                JSONSchema::options()
-                    .with_draft(Draft::Draft7)
-                    .compile(json)
-                    .ok()
-            })
-            .flatten()
+        self.required_payment_details.as_ref().and_then(|json| {
+            JSONSchema::options()
+                .with_draft(Draft::Draft7)
+                .compile(json)
+                .ok()
+        })
     }
 }