Enum Error 

#[non_exhaustive]
pub enum Error {
    Bind {
        addr: String,
        source: Error,
    },
    Registry(Error),
    Server(Error),
    Persist(Error),
    PersistEncode(Error),
}

Errors surfaced by the public serve entry point.

All variants carry enough context (a path, the bind address, the underlying I/O error) to be actionable on their own — no need to chain back through the call site to figure out what went wrong.

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.

Bind

Binding the TCP listener failed (port already in use, permission denied, …). The original I/O error is kept for diagnostics.

Fields

addr: String

Address we tried to bind.

source: Error

Underlying I/O error.

Registry(Error)

Loading the embedded site registry on startup failed. Practically unreachable since the JSON is shipped in the binary, but surfaced rather than swallowed so a corrupted custom override is visible.

Server(Error)

The axum server task returned an error (typically because the listener was closed or accept failed).

Persist(Error)

Reading or writing a persisted scan failed.

PersistEncode(Error)

Serialising a scan to JSON failed (should be unreachable — CheckOutcome is well-defined serde data).

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<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.