try_reserve 0.2.1

Stable implementation of the TryReserveError from std for custom collections
Documentation 
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use crate::error::{TryReserveError, TryReserveErrorKind};

#[allow(dead_code)]
pub trait TryReserve {
    fn try_reserve(&mut self, additional: usize) -> Result<(), TryReserveError>;
}

pub trait TryReserveErrorExtension {
    #[allow(dead_code)]
    fn to_crate_error(self) -> TryReserveError;
    #[allow(dead_code)]
    fn kind(self) -> TryReserveErrorKind;
}

#[cfg(feature = "std")]
impl TryReserveErrorExtension for std::collections::TryReserveError {
    fn to_crate_error(self) -> TryReserveError {
        TryReserveError::from(self)
    }

    fn kind(self) -> TryReserveErrorKind {
        TryReserveError::from(self).kind()
    }
}