fix: incorrect encoding on TransactionReceipt (#1661)

* fix TransactionReceipt rlp encoding

* add tests

* update changelog

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 ### Unreleased
 
+- Fix RLP encoding of `TransactionReceipt`
 - Add `Unit8` helper type [#1639](https://github.com/gakonst/ethers-rs/pull/1639)
 - Add `evm.deployedBytecode.immutableReferences` output selector [#1523](https://github.com/gakonst/ethers-rs/pull/1523)
 - Added `get_erc1155_token_transfer_events` function for etherscan client [#1503](https://github.com/gakonst/ethers-rs/pull/1503)

ethers-core/src/types/transaction/response.rs

@@ -425,7 +425,7 @@ pub struct TransactionReceipt {
 impl rlp::Encodable for TransactionReceipt {
     fn rlp_append(&self, s: &mut RlpStream) {
         s.begin_list(4);
-        s.append(&self.status);
+        rlp_opt(s, &self.status);
         s.append(&self.cumulative_gas_used);
         s.append(&self.logs_bloom);
         s.append_list(&self.logs);
@@ -457,6 +457,8 @@ impl PartialOrd<Self> for TransactionReceipt {
 #[cfg(test)]
 #[cfg(not(feature = "celo"))]
 mod tests {
+    use rlp::Encodable;
+
     use crate::types::transaction::eip2930::AccessListItem;
 
     use super::*;
@@ -907,6 +909,17 @@ mod tests {
         assert_eq!(v, receipt);
     }
 
+    #[test]
+    fn rlp_encode_receipt() {
+        let receipt = TransactionReceipt { status: Some(1u64.into()), ..Default::default() };
+        let encoded = receipt.rlp_bytes();
+
+        assert_eq!(
+            encoded,
+            hex::decode("f901060180b9010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000c0").unwrap(),
+        );
+    }
+
     #[test]
     fn can_sort_receipts() {
         let mut a = TransactionReceipt { block_number: Some(0u64.into()), ..Default::default() };