Function futures_retrying::retry

Important traits for Retry<R>

impl<R> Future for Retry<R> where
    R: Retryable,
    R::Error: Debug,  type Output = Result<R::Item, Cancelled>;

pub fn retry<R, S>(task: R, scheduler: S) -> Retry<R> where
    R: Retryable,
    R::Error: Debug,
    S: Backoff + 'static, 

Retry a future until it succeeds.