Enum Error 

#[non_exhaustive]
pub enum Error {
    Message(String),
    Unauthorized(String),
    NotFound,
    BadRequest(String),
    CustomError(StatusCode, ErrorDetail),
    InternalServerError,
    JsonRejection(JsonRejection),
    AxumFormRejection(FormRejection),
    Validation(ModelValidationErrors),
    Model(ModelError),
    WithBacktrace {
        inner: Box<Self>,
        backtrace: Box<Backtrace>,
    },
    QueueProviderMissing,
    TaskNotFound(String),
    Scheduler(Error),
    Axum(Error),
    Tera(Error),
    JSON(Error),
    YAMLFile(Error, String),
    YAML(Error),
    EmailSender(Error),
    Smtp(Error),
    Worker(String),
    IO(Error),
    DB(DbErr),
    ParseAddress(AddressError),
    InvalidHeaderValue(InvalidHeaderValue),
    InvalidHeaderName(InvalidHeaderName),
    InvalidMethod(InvalidMethod),
    Sqlx(Error),
    Storage(StorageError),
    Cache(CacheError),
    Generators(Error),
    VersionCheck(VersionCheckError),
    Any(Box<dyn Error + Send + Sync>),
}

Application-wide error type.

Variants are grouped into two regions, in this fixed order:

1. Client-facing / API errors — conditions that are meaningful to an API caller and are mapped, one by one, to a specific status code by impl IntoResponse for Error (see controller::mod). This includes Error::Model, since crate::model::ModelError variants (EntityNotFound, EntityAlreadyExists, Validation) map to distinct client statuses.
2. Internal / infrastructure errors — everything else (I/O, DB, queue, template rendering, email, etc.). These do not leak details to callers and are deliberately collapsed to a generic 500 Internal Server Error by the same IntoResponse impl, via explicit (not wildcard) match arms so the compiler forces every new variant to be classified into one of the two regions.

This grouping is purely organizational: variant names, #[error(...)] messages, #[from] conversions, and #[cfg(...)] gates are unchanged, so it is not a breaking change.

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.

Message(String)

Unauthorized(String)

NotFound

BadRequest(String)

CustomError(StatusCode, ErrorDetail)

InternalServerError

JsonRejection(JsonRejection)

AxumFormRejection(FormRejection)

Validation(ModelValidationErrors)

Model(ModelError)

WithBacktrace

Fields

inner: Box<Self>

backtrace: Box<Backtrace>

QueueProviderMissing

TaskNotFound(String)

Scheduler(Error)

Axum(Error)

Tera(Error)

JSON(Error)

YAMLFile(Error, String)

YAML(Error)

EmailSender(Error)

Smtp(Error)

Worker(String)

IO(Error)

DB(DbErr)

ParseAddress(AddressError)

InvalidHeaderValue(InvalidHeaderValue)

InvalidHeaderName(InvalidHeaderName)

InvalidMethod(InvalidMethod)

Sqlx(Error)

Storage(StorageError)

Cache(CacheError)

Generators(Error)

VersionCheck(VersionCheckError)

Any(Box<dyn Error + Send + Sync>)

Implementations

impl Error

pub fn wrap(err: impl Error + Send + Sync + 'static) -> Self

pub fn msg(err: impl Error + Send + Sync + 'static) -> Self

pub fn string(s: &str) -> Self

pub fn bt(self) -> Self

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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<AddressError> for Error

fn from(source: AddressError) -> Self

Converts to this type from the input type.

impl From<Box<dyn Error + Sync + Send>> for Error

fn from(source: Box<dyn Error + Send + Sync>) -> Self

Converts to this type from the input type.

impl From<CacheError> for Error

fn from(source: CacheError) -> Self

Converts to this type from the input type.

impl From<DbErr> for Error

fn from(source: DbErr) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(val: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<FormRejection> for Error

fn from(source: FormRejection) -> Self

Converts to this type from the input type.

impl From<InvalidHeaderName> for Error

fn from(source: InvalidHeaderName) -> Self

Converts to this type from the input type.

impl From<InvalidHeaderValue> for Error

fn from(source: InvalidHeaderValue) -> Self

Converts to this type from the input type.

impl From<InvalidMethod> for Error

fn from(source: InvalidMethod) -> Self

Converts to this type from the input type.

impl From<JsonRejection> for Error

fn from(source: JsonRejection) -> Self

Converts to this type from the input type.

impl From<ModelError> for Error

fn from(source: ModelError) -> Self

Converts to this type from the input type.

impl From<ModelValidationErrors> for Error

fn from(source: ModelValidationErrors) -> Self

Converts to this type from the input type.

impl From<StorageError> for Error

fn from(source: StorageError) -> Self

Converts to this type from the input type.

impl IntoResponse for Error

fn into_response(self) -> Response

Convert an Error into an HTTP response.