//! An uninhabitable type meaning it can never happen. //! //! To be replaced with `!` once it is stable. use std::error::Error; use std::fmt; #[derive(Debug)] pub(crate) enum Never {} impl fmt::Display for Never { fn fmt(&self, _: &mut fmt::Formatter<'_>) -> fmt::Result { match *self {} } } impl Error for Never { fn description(&self) -> &str { match *self {} } }