Enum WeightsError 

#[non_exhaustive]
pub enum WeightsError {
    Encoding(String),
    MissingField(&'static str),
    SchemaRejected(String),
    Expired {
        expires_at: DateTime<Utc>,
        now: DateTime<Utc>,
    },
    BundleRejected(String),
    CardMismatch {
        expected: String,
        found: String,
    },
    ScopeNotSubset {
        scope: String,
    },
    ToolBanned {
        tool: String,
    },
}

Error variants emitted by the model-card surface.

Variants align with urn:chio:error:weights:* codes registered in spec/errors/registry.yaml.

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.

Encoding(String)

Canonical-JSON encoding or decoding failed. Fatal: do not retry until the encoding bug is resolved.

MissingField(&'static str)

Required field is missing from the model card structure.

SchemaRejected(String)

Schema-level invariant rejected (e.g. weights_hash not 64 hex chars).

Expired

Card expired before the verifier evaluated it.

Fields

expires_at: DateTime<Utc>

Card’s expires_at field.

now: DateTime<Utc>

Verifier-side now.

BundleRejected(String)

Cosign bundle verify path rejected the bundle. Wraps the upstream chio-attest-verify error so receipt consumers can correlate.

CardMismatch

Loaded weights_hash does not match the card’s weights_hash. Maps to urn:chio:error:weights:card-mismatch.

Fields

expected: String

Card’s declared weights_hash (lowercase hex sha-256).

found: String

Runtime-loaded hash (lowercase hex sha-256).

ScopeNotSubset

Requested capability scope is not in the card’s allowed_capability_set. Maps to urn:chio:error:weights:scope-not-subset.

Fields

scope: String

First scope that violated subset containment.

ToolBanned

Requested tool is in the card’s banned_tools. Maps to urn:chio:error:weights:tool-banned.

Fields

tool: String

Tool identifier that intersected banned_tools.

Implementations

impl WeightsError

pub fn urn(&self) -> &'static str

Stable URN for this error. Consumed by the LSP-driven typed-enum codegen and audit log surfaces.

Trait Implementations

impl Debug for WeightsError

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

Formats the value using the given formatter.

impl Display for WeightsError

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

Formats the value using the given formatter.

impl Error for WeightsError

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.