Enum RuleError 

pub enum RuleError {
    Parse(String),
    DuplicateId(String),
    Runtime {
        route: String,
        detail: String,
    },
    Op {
        rule: String,
        detail: String,
    },
    MissingMicrotest(String),
    MissingLever(String),
    Numerics {
        rule: String,
        detail: String,
    },
    Shape {
        rule: String,
        detail: String,
    },
}

2026-09-28: Why FUSIONS.toml did not load.

Variants

Parse(String)

2026-09-28: Not valid TOML or not the rules shape.

DuplicateId(String)

2026-09-28: Two rules share an id.

Runtime

2026-09-30: A malformed [[runtime]] route (crate::runtime).

Fields

route: String

2026-09-30: Route id.

detail: String

2026-09-30: What was wrong.

Op

2026-09-28: A pattern op the vocabulary does not have.

Fields

rule: String

2026-09-28: Rule id.

detail: String

2026-09-28: What was wrong.

MissingMicrotest(String)

2026-09-28: bit_identical without microtest.

MissingLever(String)

2026-09-28: differs without lever.

Numerics

2026-09-28: A microtest or lever on a class that takes none, or an unknown class.

Fields

rule: String

2026-09-28: Rule id.

detail: String

2026-09-28: What was wrong.

Shape

2026-09-28: Empty pattern, empty modes, unknown mode, bad row range or empty cite.

Fields

rule: String

2026-09-28: Rule id.

detail: String

2026-09-28: What was wrong.

Trait Implementations

impl Clone for RuleError

fn clone(&self) -> RuleError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RuleError

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

Formats the value using the given formatter.

impl Display for RuleError

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

Formats the value using the given formatter.

impl Error for RuleError

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<RuleError> for LoadError

fn from(source: RuleError) -> Self

Converts to this type from the input type.

impl PartialEq for RuleError

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for RuleError

impl StructuralPartialEq for RuleError