Enum SubscribeError 

pub enum SubscribeError {
    PartitionOrderViolation(PartitionOrderViolation),
    TornDown {
        node: NodeId,
    },
}

Errors returnable by Core::try_subscribe.

Core::subscribe (the panic-on-error variant) panics on either case; try_subscribe returns these so operators (zip / concat / race / take_until / merge / switch_map / etc.) can match on the variant — defer for Self::PartitionOrderViolation, skip the source for Self::TornDown.

Per canonical spec R2.2.7.a / R2.2.7.b (D118, 2026-05-10).

Variants

PartitionOrderViolation(PartitionOrderViolation)

Phase H+ STRICT (D115): partition acquisition would violate the ascending-order protocol. Caller should defer the subscribe to wave-end via the producer-pattern deferred-op queue.

TornDown

R2.2.7.b (D118, 2026-05-10): the node is non-resubscribable AND has terminated ([COMPLETE] or [ERROR, h] was delivered). The stream is permanently over; subscribe is rejected. Resubscribable terminal nodes do NOT surface this error — they reset to a fresh lifecycle on subscribe per R2.2.7.a, regardless of TEARDOWN state.

Fields

node: NodeId

The non-resubscribable terminal node that rejected the subscribe.

Trait Implementations

impl Clone for SubscribeError

fn clone(&self) -> SubscribeError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SubscribeError

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

Formats the value using the given formatter.

impl Display for SubscribeError

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

Formats the value using the given formatter.

impl Error for SubscribeError

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)

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

impl From<PartitionOrderViolation> for SubscribeError

fn from(source: PartitionOrderViolation) -> Self

Converts to this type from the input type.

impl PartialEq for SubscribeError

fn eq(&self, other: &SubscribeError) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for SubscribeError

impl StructuralPartialEq for SubscribeError