Enum TaskExecutionError 

pub enum TaskExecutionError<E> {
    Failed(E),
    Panicked,
    Cancelled,
}

Error observed when retrieving the result of an accepted task.

This error is distinct from RejectedExecution. Rejection happens before a service accepts a task; TaskExecutionError describes what happened after the task was accepted.

Type Parameters

• E - The error type returned by the task itself.

Author

Haixing Hu

Variants

Failed(E)

The task ran and returned Err(E).

Panicked

The task panicked while running.

Cancelled

The task was cancelled before producing a result.

Implementations

impl<E> TaskExecutionError<E>

pub const fn is_failed(&self) -> bool

Returns true when this error wraps the task’s own error value.

Returns

true if the task returned Err(E).

pub const fn is_panicked(&self) -> bool

Returns true when the task panicked.

Returns

true if the task panicked while running.

pub const fn is_cancelled(&self) -> bool

Returns true when the task was cancelled.

Returns

true if the task was cancelled before producing a result.

Trait Implementations

impl<E: Debug> Debug for TaskExecutionError<E>

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

Formats the value using the given formatter.

impl<E> Display for TaskExecutionError<E>

where E: Display,

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

Formats this task execution error for users.

impl<E> Error for TaskExecutionError<E>

where E: Error + 'static,

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.