#[cfg(feature = "async-std-task")]
mod impl_task {
    use async_std::task::JoinHandle;

    use crate::{DropGuard, DropGuarded};

    impl<T> DropGuarded for JoinHandle<T> {
        #[inline]
        fn cancel(self) {
            let _ = JoinHandle::<T>::cancel(self);
        }
    }

    impl<T> core::future::Future for DropGuard<JoinHandle<T>> {
        type Output = T;

        fn poll(
            mut self: core::pin::Pin<&mut Self>,
            cx: &mut core::task::Context<'_>,
        ) -> core::task::Poll<Self::Output> {
            let handle = (*self).inner.as_mut().expect("can only be None in drop");
            core::pin::Pin::new(handle).poll(cx)
        }
    }
}