Struct Unsatisfiable 

pub struct Unsatisfiable;

Error type for unsatisfiable constraints.

Trait Implementations

impl Clone for Unsatisfiable

fn clone(&self) -> Unsatisfiable

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Unsatisfiable

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

Formats the value using the given formatter.

impl Display for Unsatisfiable

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

Formats the value using the given formatter.

impl Error for Unsatisfiable

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<Unsatisfiable> for CspError

The propagation layer’s existing marker type converts losslessly — every current ?-using call site (Csp::propagate, Csp::propagate_with) keeps compiling unchanged; only the bindings need to switch their map_err target.

fn from(_: Unsatisfiable) -> Self

Converts to this type from the input type.