Enum SetFallbackRuntimeError 

#[non_exhaustive]
pub enum SetFallbackRuntimeError {
    AlreadySet,
    BuildFailed(Error),
    SpawnFailed(Error),
}

The error returned by set_fallback_runtime().

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.

AlreadySet

A fallback runtime has already been set or created.

BuildFailed(Error)

The runtime could not be built.

SpawnFailed(Error)

The thread that drives a current-thread runtime could not be spawned.

Trait Implementations

impl Debug for SetFallbackRuntimeError

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

Formats the value using the given formatter.

impl Display for SetFallbackRuntimeError

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

Formats the value using the given formatter.

impl Error for SetFallbackRuntimeError

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.