chore: crates/consensus - Use derive_more::Error rather than impl std…

…:error:Error (#10831)

Co-authored-by: garwah <garwah@garwah>

crates/consensus/consensus/src/lib.rs

@@ -127,7 +127,7 @@ pub trait Consensus: Debug + Send + Sync {
 }
 
 /// Consensus Errors
-#[derive(Debug, PartialEq, Eq, Clone, derive_more::Display)]
+#[derive(Debug, PartialEq, Eq, Clone, derive_more::Display, derive_more::Error)]
 pub enum ConsensusError {
     /// Error when the gas used in the header exceeds the gas limit.
     #[display("block used gas ({gas_used}) is greater than gas limit ({gas_limit})")]
@@ -395,16 +395,6 @@ pub enum ConsensusError {
     },
 }
 
-#[cfg(feature = "std")]
-impl std::error::Error for ConsensusError {
-    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
-        match self {
-            Self::InvalidTransaction(err) => std::error::Error::source(err),
-            _ => Option::None,
-        }
-    }
-}
-
 impl ConsensusError {
     /// Returns `true` if the error is a state root error.
     pub const fn is_state_root_error(&self) -> bool {
@@ -419,9 +409,6 @@ impl From<InvalidTransactionError> for ConsensusError {
 }
 
 /// `HeaderConsensusError` combines a `ConsensusError` with the `SealedHeader` it relates to.
-#[derive(derive_more::Display, Debug)]
+#[derive(derive_more::Display, derive_more::Error, Debug)]
 #[display("Consensus error: {_0}, Invalid header: {_1:?}")]
 pub struct HeaderConsensusError(ConsensusError, SealedHeader);
-
-#[cfg(feature = "std")]
-impl std::error::Error for HeaderConsensusError {}