Enum TokioRuntimeError 

#[non_exhaustive]
pub enum TokioRuntimeError {
    NotEntered {
        source: TryCurrentError,
    },
}

Available on crate feature tokio only.

Describes why a Tokio-backed type cannot capture the current runtime.

This error occurs only in try_current constructors. Once constructed, a Tokio clock or timer uses its retained runtime handle and does not depend on the caller’s ambient runtime context. The enum is non-exhaustive; callers must retain a fallback arm when matching it.

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.

NotEntered

No Tokio runtime is entered on the current thread.

Fields

source: TryCurrentError

Runtime lookup error reported by Tokio.

Trait Implementations

impl Debug for TokioRuntimeError

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

Formats the value using the given formatter.

impl Display for TokioRuntimeError

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

Formats the value using the given formatter.

impl Error for TokioRuntimeError

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.