// std::pipe

fn pipe() -> io::Result<(PipeReader, PipeWriter)>;

struct PipeReader {...}
struct PipeWriter {...}

impl PipeReader {
    fn try_clone(&self) -> io::Result<Self>;
}

impl PipeWriter {
    fn try_clone(&self) -> io::Result<Self>;
}

impl Read for &PipeReader
impl Read for PipeReader
impl Debug for PipeReader
impl From<PipeReader> for Stdio

impl Write for &PipeWriter
impl Write for PipeWriter
impl Debug for PipeWriter
impl From<PipeWriter> for Stdio

// unix {
impl AsFd for PipeReader
impl AsRawFd for PipeReader
impl FromRawFd for PipeReader
impl IntoRawFd for PipeReader
impl From<PipeReader> for OwnedFd
impl From<OwnedFd> for PipeReader

impl AsFd for PipeWriter
impl AsRawFd for PipeWriter
impl FromRawFd for PipeWriter
impl IntoRawFd for PipeWriter
impl From<PipeWriter> for OwnedFd
impl From<OwnedFd> for PipeWriter
// }

// windows {
impl AsHandle for PipeReader
impl AsRawHandle for PipeReader
impl FromRawHandle for PipeReader
impl IntoRawHandle for PipeReader
impl From<PipeReader> for OwnedHandle
impl From<OwnedHandle> for PipeReader

impl AsHandle for PipeWriter
impl AsRawHandle for PipeWriter
impl FromRawHandle for PipeWriter
impl IntoRawHandle for PipeWriter
impl From<PipeWriter> for OwnedHandle
impl From<OwnedHandle> for PipeWriter
// }