Enum CheckError 

#[non_exhaustive]
pub enum CheckError {
    Overreach {
        checker: CheckerId,
        atom: String,
    },
    UndecidableGrants {
        checker: CheckerId,
    },
    Address {
        checker: CheckerId,
        detail: String,
    },
    Sign {
        checker: CheckerId,
        source: SignError,
    },
}

The engine refused to produce evidence.

Note what is not here: a checker’s own inability to decide. That is Verdict::Inconclusive, which is an answer. These are failures to reach the point of having an answer at all.

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.

Overreach

The checker declared authority a checker may not hold.

Refused before Checker::judge runs, so the offending checker never executes with it.

Fields

checker: CheckerId

Which checker.

atom: String

The first atom that escaped the ceiling.

UndecidableGrants

The checker’s declared authority could not be proved to be within the ceiling.

A refusal rather than a pass. Goal G5: what cannot be proved is not assumed, and a permission granted on a guess is the one failure this whole layer exists to prevent.

Fields

checker: CheckerId

Which checker.

Address

The work order or condensate could not be canonically encoded, so the evidence cannot name what it covers.

Fields

checker: CheckerId

Which checker.

detail: String

Why.

Sign

The verdict could not be signed, so there is no evidence and nothing commits.

Fields

checker: CheckerId

Which checker.

source: SignError

What went wrong.

Trait Implementations

impl Clone for CheckError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CheckError

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

Formats the value using the given formatter.

impl Display for CheckError

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

Formats the value using the given formatter.

impl Eq for CheckError

impl Error for CheckError

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 PartialEq for CheckError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for CheckError