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    use core::pin::Pin;
    use futures_core::future::{FusedFuture, Future, TryFuture};
    use futures_core::task::{Context, Poll};
    use pin_project_lite::pin_project;

    pin_project! {
        /// Future for the [`into_future`](super::TryFutureExt::into_future) method.
        #[derive(Debug)]
        #[must_use = "futures do nothing unless you `.await` or poll them"]
        pub struct IntoFuture<Fut> {
            #[pin]
            future: Fut,
        }
    }

    impl<Fut> IntoFuture<Fut> {
        #[inline]
        pub(crate) fn new(future: Fut) -> Self {
            Self { future }
        }
    }

    impl<Fut: TryFuture + FusedFuture> FusedFuture for IntoFuture<Fut> {
        fn is_terminated(&self) -> bool { self.future.is_terminated() }
    }

    impl<Fut: TryFuture> Future for IntoFuture<Fut> {
        type Output = Result<Fut::Ok, Fut::Error>;

        #[inline]
        fn poll(
            self: Pin<&mut Self>,
            cx: &mut Context<'_>,
        ) -> Poll<Self::Output> {
            self.project().future.try_poll(cx)
        }
    }