Enum MigrateError 

#[non_exhaustive]
pub enum MigrateError {
    ChecksumMismatch {
        version: i64,
    },
    NewerThanProgram {
        version: i64,
    },
    Dirty {
        version: i64,
    },
    Failed {
        version: i64,
        error: RelError,
    },
    Backend(String),
}

Why a migration run stopped.

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.

ChecksumMismatch

A migration already applied has different text now (its checksum differs).

Fields

version: i64

The version whose text changed.

NewerThanProgram

The database has applied a version this program does not know: it is older than the database it is pointed at. The program refuses rather than run against a newer schema.

Fields

version: i64

The unknown applied version.

Dirty

A migration is recorded as partially applied (success = false); a person must fix it.

Fields

version: i64

The version.

Failed

A migration’s SQL failed; its transaction was rolled back.

Fields

version: i64

The version.

error: RelError

The database’s classification of the failure.

Backend(String)

Anything else (connection, ledger access).

Trait Implementations

impl Clone for MigrateError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MigrateError

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

Formats the value using the given formatter.

impl Display for MigrateError

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

Formats the value using the given formatter.

impl Eq for MigrateError

impl Error for MigrateError

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 PartialEq for MigrateError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for MigrateError