Make dynamic message Take messages rvalue methods

src/io/simulator/message_conversion.hpp

@@ -58,7 +58,7 @@ struct OpaqueMessage {
   }
 
   template <Message... Ms>
-  requires(sizeof...(Ms) > 0) std::optional<RequestEnvelope<Ms...>> Take() {
+  requires(sizeof...(Ms) > 0) std::optional<RequestEnvelope<Ms...>> Take() && {
     std::optional<std::variant<Ms...>> m_opt = VariantFromAny<Ms...>(std::move(message));
 
     if (m_opt) {
@@ -111,7 +111,7 @@ class OpaquePromise {
   OpaquePromise &operator=(const OpaquePromise &) = delete;
 
   template <typename T>
-  std::unique_ptr<ResponsePromise<T>> Take() {
+  std::unique_ptr<ResponsePromise<T>> Take() && {
     MG_ASSERT(typeid(T) == *ti_);
     MG_ASSERT(ptr_ != nullptr);
 

src/io/simulator/simulator_handle.hpp

@@ -152,7 +152,7 @@ class SimulatorHandle {
 
           // TODO(tyler) search for item in can_receive_ that matches the desired types, rather
           // than asserting that the last item in can_rx matches.
-          auto m_opt = message.Take<Ms...>();
+          auto m_opt = std::move(message).Take<Ms...>();
 
           blocked_on_receive_ -= 1;