#[unstable(feature = "refcell_try_map", issue = "143801")]
#[derive(Debug, Clone)]
pub struct TryMapError<T, E> {
    pub original: T,
    pub error: E,
}

#[unstable(feature = "refcell_try_map", issue = "143801")]
impl<T, E: crate::error::Error> From<TryMapError<T, E>> for E {
    fn from(TryMapError { original: _, error }: TryMapError<T, E>) -> Self {
        error
    }
}

impl fmt::Debug for Kind {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.write_str("Kind(")?;
        let mut has_bits = false;
        let mut write_bit = |name: &str| {
            if has_bits {
                f.write_str(" | ")?;
            }
            f.write_str(name)?;
            has_bits = true;
            Ok(())
        };

        if self.is_event() {
            write_bit("EVENT")?;
        }