Enum UpgradeError 

#[non_exhaustive]
pub enum UpgradeError<E> {
    Probe(E),
    Replace(E),
    Lock(Error),
    Deadline,
}

Failure to obtain a live daemon satisfying the caller’s version policy.

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.

Probe(E)

A health probe failed, rather than reporting an absent daemon.

Replace(E)

The caller’s replacement operation failed.

Lock(Error)

The upgrade lock could not be opened or acquired.

Deadline

The shared deadline expired during a probe, lock wait, or replacement.

Trait Implementations

impl<E: Debug> Debug for UpgradeError<E>

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

Formats the value using the given formatter.

impl<E: Display> Display for UpgradeError<E>

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

Formats the value using the given formatter.

impl<E: Error + 'static> Error for UpgradeError<E>

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.