Enum StorageError 

pub enum StorageError {
    StudyNotFound(String),
    Serialization(String),
    SchemaMismatch {
        found: i64,
        expected: i64,
    },
    Backend(String),
}

Errors a Storage backend can raise.

Variants

StudyNotFound(String)

A study with the requested name was not found.

Serialization(String)

Serialization/deserialization of a trial failed.

SchemaMismatch

The backing store (file, DB) is at an incompatible schema version.

Fields

found: i64

expected: i64

Backend(String)

Any backend-specific I/O or driver error.

Trait Implementations

impl Debug for StorageError

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

Formats the value using the given formatter.

impl Display for StorageError

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

Formats the value using the given formatter.

impl Error for StorageError

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.

impl From<StorageError> for HyperoptError

fn from(e: StorageError) -> HyperoptError

Converts to this type from the input type.