Plumb TransactionError through Rpc

sdk/src/instruction.rs

@@ -7,7 +7,7 @@ use bincode::serialize;
 use serde::Serialize;
 
 /// Reasons the runtime might have rejected an instruction.
-#[derive(Debug, PartialEq, Eq, Clone)]
+#[derive(Serialize, Deserialize, Debug, PartialEq, Eq, Clone)]
 pub enum InstructionError {
     /// Deprecated! Use CustomError instead!
     /// The program instruction returned an error

sdk/src/transaction.rs

@@ -10,7 +10,7 @@ use bincode::serialize;
 use std::result;
 
 /// Reasons a transaction might be rejected.
-#[derive(Debug, PartialEq, Eq, Clone)]
+#[derive(Serialize, Deserialize, Debug, PartialEq, Eq, Clone)]
 pub enum TransactionError {
     /// This Pubkey is being processed in another transaction
     AccountInUse,