Have coordinator publish batches to Substrate

substrate/client/src/serai/in_instructions.rs

@@ -33,7 +33,7 @@ impl Serai {
       .await
   }
 
-  pub fn execute_batch(&self, batch: SignedBatch) -> Result<Encoded, SeraiError> {
+  pub fn execute_batch(&self, batch: SignedBatch) -> Encoded {
     self.unsigned::<InInstructions, _>(&in_instructions::Call::<Runtime>::execute_batch { batch })
   }
 }

substrate/client/src/serai/mod.rs

@@ -269,7 +269,7 @@ impl Serai {
       .map_err(SeraiError::RpcError)
   }
 
-  fn unsigned<P: 'static, C: Encode>(&self, call: &C) -> Result<Encoded, SeraiError> {
+  fn unsigned<P: 'static, C: Encode>(&self, call: &C) -> Encoded {
     // TODO: Should Serai purge the old transaction code AND set this to 0/1?
     const TRANSACTION_VERSION: u8 = 4;
 
@@ -284,7 +284,7 @@ impl Serai {
     // Prefix the length
     let mut complete_bytes = scale::Compact(u32::try_from(bytes.len()).unwrap()).encode();
     complete_bytes.extend(bytes);
-    Ok(Encoded(complete_bytes))
+    Encoded(complete_bytes)
   }
 
   pub fn sign<S: Send + Sync + Signer<SeraiConfig>>(

substrate/client/tests/common/in_instructions.rs

@@ -31,8 +31,7 @@ pub async fn provide_batch(batch: Batch) -> [u8; 32] {
 
   let block = publish_tx(
     &serai
-      .execute_batch(SignedBatch { batch: batch.clone(), signature: pair.sign(&batch.encode()) })
-      .unwrap(),
+      .execute_batch(SignedBatch { batch: batch.clone(), signature: pair.sign(&batch.encode()) }),
   )
   .await;