Enum ErrorKind 

#[non_exhaustive]
pub enum ErrorKind {
    Busy,
    Constraint(ConstraintKind),
    Connection,
    PoolTimeout,
    Decode,
    Encode,
    NotFound,
    Misuse,
    Other,
}

The classification of an Error.

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.

Busy

Lock contention, a stale snapshot or an MVCC commit conflict. Worth retrying.

Constraint(ConstraintKind)

A constraint violation.

Connection

The database could not be opened or a connection could not be established.

PoolTimeout

The pool timed out handing out a connection.

Decode

A value could not be decoded into the requested Rust type.

Encode

A value could not be encoded as a parameter.

NotFound

A query returned no row where one was required.

Misuse

Misuse of the API, for example contradictory options or a closed pool.

Other

Any other engine error.

Trait Implementations

impl Clone for ErrorKind

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for ErrorKind

impl Debug for ErrorKind

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

Formats the value using the given formatter.

impl Eq for ErrorKind

impl PartialEq for ErrorKind

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ErrorKind