Enum EngineBuildError

pub enum EngineBuildError {
    FinalizedAheadOfUnsafe(u64, u64),
    AttributesInsertionFailed(RpcError<TransportErrorKind>),
    InvalidPayload(String),
    UnexpectedPayloadStatus(PayloadStatusEnum),
    MissingPayloadId,
    EngineSyncing,
}

An error that occurs during payload building within the engine.

This error type is specific to the block building process and represents failures that can occur during the automatic forkchoice update phase of BuildTask. Unlike BuildTaskError, which handles higher-level build orchestration errors, EngineBuildError focuses on low-level engine API communication failures.

Error Categories

• State Validation: Errors related to inconsistent chain state
• Engine Communication: RPC failures during forkchoice updates
• Payload Validation: Invalid payload status responses from the execution layer

Variants

FinalizedAheadOfUnsafe(u64, u64)

The finalized head is ahead of the unsafe head.

AttributesInsertionFailed(RpcError<TransportErrorKind>)

The forkchoice update call to the engine api failed.

InvalidPayload(String)

The inserted payload is invalid.

UnexpectedPayloadStatus(PayloadStatusEnum)

The inserted payload status is unexpected.

MissingPayloadId

The payload ID is missing.

EngineSyncing

The engine is syncing.

Trait Implementations

impl Debug for EngineBuildError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for EngineBuildError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for EngineBuildError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access #99301)

Provides type-based access to context intended for error reports.

impl From<RpcError<TransportErrorKind>> for EngineBuildError

fn from(source: RpcError<TransportErrorKind>) -> Self

Converts to this type from the input type.