Enum PollNextArgsError 

#[non_exhaustive]
pub enum PollNextArgsError<B: Backend> {
    BackendError(B::Error),
    DecodeError(BoxDynError),
}

A wrapper that allows a backend to be used as a stream of tasks, without needing to know the concrete backend type at compile time.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

BackendError(B::Error)

The backend produced an error while polling for the next task.

DecodeError(BoxDynError)

The backend produced a task, but the task’s arguments could not be decoded.

Trait Implementations

impl<B: Debug + Backend> Debug for PollNextArgsError<B>

where B::Error: Debug,

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

Formats the value using the given formatter.

impl<B: Backend> Display for PollNextArgsError<B>

where B::Error: Display,

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

Formats the value using the given formatter.

impl<B: Backend> Error for PollNextArgsError<B>

where Self: Debug + Display,

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.