Struct JoinError 

pub struct JoinError { /* private fields */ }

Why awaiting a JoinFuture yielded an error instead of the task output — the seam-owned mirror of tokio::task::JoinError.

Only is_cancelled is exposed: it is the one JoinError method any seam call site consumes (the W3b map shows is_cancelled() in ca/pva shutdown paths; no site calls is_panic() / into_panic()).

Implementations

impl JoinError

pub fn is_cancelled(&self) -> bool

true when the task was aborted before completing — mirrors tokio::task::JoinError::is_cancelled. A panicked task returns false here (as tokio does).

Trait Implementations

impl Clone for JoinError

fn clone(&self) -> JoinError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for JoinError

impl Debug for JoinError

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

Formats the value using the given formatter.

impl Display for JoinError

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

Formats the value using the given formatter.

impl Eq for JoinError

impl Error for JoinError

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 PartialEq for JoinError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for JoinError