Enum MintError 

#[non_exhaustive]
pub enum MintError {
    Missing(&'static str),
    EmptyAudience,
    BadTid,
    UnsupportedAlg(Alg),
    AppNotMap,
    ReservedKey,
    Nan,
    Serialization(String),
}

A failure while minting a token. Descriptive — minting is the trusted side, so detail here is not an oracle.

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.

Missing(&'static str)

A required field was not set (e.g. exp).

EmptyAudience

aud was set to an empty array (the aud field, §8.4).

BadTid

The provided tid is not a well-formed UUIDv7 — version 7 with the RFC 4122 variant (the tid field, §8.2). The auto-generated tid always is; this guards a tid set explicitly via MintBuilder::tid.

UnsupportedAlg(Alg)

The chosen algorithm code is not compiled into this build.

AppNotMap

The application value did not serialize to a CBOR map. obsigil merges application fields into the half’s map (the Serialization rules, §7), so the value must be a map/struct; use NoApp for a half with no app data.

ReservedKey

An application field used a negative integer key, which is reserved to obsigil (the Serialization rules, §7). Application keys are non-negative integers and text strings.

Nan

An application field carried a floating-point NaN, which has no canonical CBOR encoding and is forbidden (the Serialization rules, §7).

Serialization(String)

Serializing the fields failed.

Trait Implementations

impl Debug for MintError

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

Formats the value using the given formatter.

impl Display for MintError

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

Formats the value using the given formatter.

impl Error for MintError

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.