Trait std::marker::Unpin

1.33.0 · source ·
pub auto trait Unpin { }
Expand description

Types that do not require any pinning guarantees.

For information on what “pinning” is, see the pin module documentation.

Implementing the Unpin trait for T expresses the fact that T is pinning-agnostic: it shall not expose nor rely on any pinning guarantees. This, in turn, means that a Pin-wrapped pointer to such a type can feature a fully unrestricted API. In other words, if T: Unpin, a value of type T will not be bound by the invariants which pinning otherwise offers, even when “pinned” by a Pin<Ptr> pointing at it. When a value of type T is pointed at by a Pin<Ptr>, Pin will not restrict access to the pointee value like it normally would, thus allowing the user to do anything that they normally could with a non-Pin-wrapped Ptr to that value.

The idea of this trait is to alleviate the reduced ergonomics of APIs that require the use of Pin for soundness for some types, but which also want to be used by other types that don’t care about pinning. The prime example of such an API is Future::poll. There are many Future types that don’t care about pinning. These futures can implement Unpin and therefore get around the pinning related restrictions in the API, while still allowing the subset of Futures which do require pinning to be implemented soundly.

For more discussion on the consequences of Unpin within the wider scope of the pinning system, see the section about Unpin in the pin module.

Unpin has no consequence at all for non-pinned data. In particular, mem::replace happily moves !Unpin data, which would be immovable when pinned (mem::replace works for any &mut T, not just when T: Unpin).

However, you cannot use mem::replace on !Unpin data which is pinned by being wrapped inside a Pin<Ptr> pointing at it. This is because you cannot (safely) use a Pin<Ptr> to get an &mut T to its pointee value, which you would need to call mem::replace, and that is what makes this system work.

So this, for example, can only be done on types implementing Unpin:

use std::mem;
use std::pin::Pin;

let mut string = "this".to_string();
let mut pinned_string = Pin::new(&mut string);

// We need a mutable reference to call `mem::replace`.
// We can obtain such a reference by (implicitly) invoking `Pin::deref_mut`,
// but that is only possible because `String` implements `Unpin`.
mem::replace(&mut *pinned_string, "other".to_string());
Run

This trait is automatically implemented for almost every type. The compiler is free to take the conservative stance of marking types as Unpin so long as all of the types that compose its fields are also Unpin. This is because if a type implements Unpin, then it is unsound for that type’s implementation to rely on pinning-related guarantees for soundness, even when viewed through a “pinning” pointer! It is the responsibility of the implementor of a type that relies upon pinning for soundness to ensure that type is not marked as Unpin by adding PhantomPinned field. For more details, see the pin module docs.

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impl !Unpin for PhantomPinned

1.36.0 · source§

impl Unpin for Waker

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impl<Dyn> Unpin for DynMetadata<Dyn>
where Dyn: ?Sized,

1.64.0 · source§

impl<F> Unpin for PollFn<F>
where F: Unpin,

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impl<I> Unpin for FromIter<I>

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impl<T> Unpin for *const T
where T: ?Sized,

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impl<T> Unpin for *mut T
where T: ?Sized,

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impl<T> Unpin for &T
where T: ?Sized,

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impl<T> Unpin for &mut T
where T: ?Sized,

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impl<T> Unpin for Ready<T>

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impl<T, A> Unpin for Box<T, A>
where A: Allocator + 'static, T: ?Sized,

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impl<T, A> Unpin for Rc<T, A>
where A: Allocator, T: ?Sized,

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impl<T, A> Unpin for Arc<T, A>
where A: Allocator, T: ?Sized,

Auto implementors§

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impl Unpin for AsciiChar

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impl Unpin for BacktraceStatus

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impl Unpin for std::cmp::Ordering

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impl Unpin for TryReserveErrorKind

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impl Unpin for Infallible

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impl Unpin for VarError

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impl Unpin for c_void

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impl Unpin for std::fmt::Alignment

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impl Unpin for BasicBlock

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impl Unpin for UnwindTerminateReason

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impl Unpin for ErrorKind

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impl Unpin for SeekFrom

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impl Unpin for IpAddr

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impl Unpin for Ipv6MulticastScope

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impl Unpin for Shutdown

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impl Unpin for std::net::SocketAddr

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impl Unpin for FpCategory

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impl Unpin for IntErrorKind

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impl Unpin for AncillaryError

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impl Unpin for BacktraceStyle

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impl Unpin for SearchStep

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impl Unpin for std::sync::atomic::Ordering

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impl Unpin for RecvTimeoutError

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impl Unpin for TryRecvError

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impl Unpin for bool

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impl Unpin for char

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impl Unpin for f32

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impl Unpin for f64

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impl Unpin for i8

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impl Unpin for i16

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impl Unpin for i32

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impl Unpin for i64

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impl Unpin for i128

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impl Unpin for isize

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impl Unpin for str

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impl Unpin for u8

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impl Unpin for u16

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impl Unpin for u32

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impl Unpin for u64

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impl Unpin for u128

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impl Unpin for ()

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impl Unpin for usize

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impl Unpin for AllocError

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impl Unpin for Global

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impl Unpin for Layout

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impl Unpin for LayoutError

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impl Unpin for System

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impl Unpin for TypeId

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impl Unpin for TryFromSliceError

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impl Unpin for std::ascii::EscapeDefault

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impl Unpin for Backtrace

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impl Unpin for BacktraceFrame

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impl Unpin for BorrowError

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impl Unpin for BorrowMutError

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impl Unpin for CharTryFromError

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impl Unpin for DecodeUtf16Error

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impl Unpin for std::char::EscapeDebug

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impl Unpin for std::char::EscapeDefault

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impl Unpin for std::char::EscapeUnicode

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impl Unpin for ParseCharError

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impl Unpin for ToLowercase

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impl Unpin for ToUppercase

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impl Unpin for TryFromCharError

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impl Unpin for UnorderedKeyError

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impl Unpin for DefaultHasher

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impl Unpin for RandomState

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impl Unpin for TryReserveError

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impl Unpin for Args

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impl Unpin for ArgsOs

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impl Unpin for JoinPathsError

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impl Unpin for Vars

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impl Unpin for VarsOs

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impl Unpin for CStr

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impl Unpin for CString

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impl Unpin for FromBytesUntilNulError

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impl Unpin for FromBytesWithNulError

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impl Unpin for FromVecWithNulError

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impl Unpin for IntoStringError

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impl Unpin for NulError

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impl Unpin for OsStr

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impl Unpin for OsString

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impl Unpin for std::fmt::Error

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impl Unpin for DirBuilder

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impl Unpin for DirEntry

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impl Unpin for File

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impl Unpin for FileTimes

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impl Unpin for FileType

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impl Unpin for Metadata

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impl Unpin for OpenOptions

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impl Unpin for Permissions

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impl Unpin for ReadDir

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impl Unpin for SipHasher

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impl Unpin for ReturnToArg

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impl Unpin for UnwindActionArg

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impl Unpin for std::io::Empty

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impl Unpin for std::io::Error

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impl Unpin for std::io::Repeat

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impl Unpin for Sink

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impl Unpin for Stderr

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impl Unpin for Stdin

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impl Unpin for Stdout

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impl Unpin for WriterPanicked

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impl Unpin for Assume

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impl Unpin for AddrParseError

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impl Unpin for IntoIncoming

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impl Unpin for Ipv4Addr

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impl Unpin for Ipv6Addr

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impl Unpin for SocketAddrV4

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impl Unpin for SocketAddrV6

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impl Unpin for TcpListener

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impl Unpin for TcpStream

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impl Unpin for UdpSocket

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impl Unpin for ParseFloatError

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impl Unpin for ParseIntError

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impl Unpin for TryFromIntError

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impl Unpin for RangeFull

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impl Unpin for OwnedFd

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impl Unpin for PidFd

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impl Unpin for stat

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impl Unpin for std::os::unix::net::SocketAddr

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impl Unpin for SocketCred

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impl Unpin for UnixDatagram

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impl Unpin for UnixListener

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impl Unpin for UnixStream

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impl Unpin for UCred

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impl Unpin for HandleOrInvalid

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impl Unpin for HandleOrNull

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impl Unpin for InvalidHandleError

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impl Unpin for NullHandleError

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impl Unpin for OwnedHandle

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impl Unpin for OwnedSocket

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impl Unpin for Path

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impl Unpin for PathBuf

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impl Unpin for StripPrefixError

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impl Unpin for Child

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impl Unpin for ChildStderr

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impl Unpin for ChildStdin

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impl Unpin for ChildStdout

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impl Unpin for Command

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impl Unpin for ExitCode

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impl Unpin for ExitStatus

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impl Unpin for ExitStatusError

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impl Unpin for Output

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impl Unpin for Stdio

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impl Unpin for std::ptr::Alignment

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impl Unpin for ParseBoolError

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impl Unpin for Utf8Error

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impl Unpin for FromUtf8Error

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impl Unpin for FromUtf16Error

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impl Unpin for String

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impl Unpin for AtomicBool

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impl Unpin for AtomicI8

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impl Unpin for AtomicI16

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impl Unpin for AtomicI32

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impl Unpin for AtomicI64

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impl Unpin for AtomicIsize

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impl Unpin for AtomicU8

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impl Unpin for AtomicU16

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impl Unpin for AtomicU32

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impl Unpin for AtomicU64

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impl Unpin for AtomicUsize

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impl Unpin for RecvError

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impl Unpin for Barrier

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impl Unpin for BarrierWaitResult

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impl Unpin for Condvar

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impl Unpin for std::sync::Once

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impl Unpin for OnceState

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impl Unpin for WaitTimeoutResult

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impl Unpin for RawWaker

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impl Unpin for RawWakerVTable

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impl Unpin for AccessError

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impl Unpin for Builder

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impl Unpin for Thread

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impl Unpin for ThreadId

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impl Unpin for Duration

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impl Unpin for Instant

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impl Unpin for SystemTime

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impl Unpin for SystemTimeError

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impl Unpin for TryFromFloatSecsError

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impl<'a> !Unpin for Request<'a>

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impl<'a> Unpin for AncillaryData<'a>

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impl<'a> Unpin for Component<'a>

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impl<'a> Unpin for Prefix<'a>

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impl<'a> Unpin for SplitPaths<'a>

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impl<'a> Unpin for Arguments<'a>

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impl<'a> Unpin for Formatter<'a>

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impl<'a> Unpin for BorrowedCursor<'a>

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impl<'a> Unpin for IoSlice<'a>

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impl<'a> Unpin for IoSliceMut<'a>

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impl<'a> Unpin for StderrLock<'a>

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impl<'a> Unpin for StdinLock<'a>

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impl<'a> Unpin for StdoutLock<'a>

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impl<'a> Unpin for std::net::Incoming<'a>

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impl<'a> Unpin for std::os::unix::net::Incoming<'a>

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impl<'a> Unpin for Messages<'a>

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impl<'a> Unpin for ScmCredentials<'a>

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impl<'a> Unpin for ScmRights<'a>

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impl<'a> Unpin for SocketAncillary<'a>

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impl<'a> Unpin for EncodeWide<'a>

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impl<'a> Unpin for Location<'a>

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impl<'a> Unpin for PanicInfo<'a>

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impl<'a> Unpin for Ancestors<'a>

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impl<'a> Unpin for Components<'a>

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impl<'a> Unpin for Display<'a>

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impl<'a> Unpin for std::path::Iter<'a>

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impl<'a> Unpin for PrefixComponent<'a>

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impl<'a> Unpin for CommandArgs<'a>

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impl<'a> Unpin for CommandEnvs<'a>

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impl<'a> Unpin for EscapeAscii<'a>

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impl<'a> Unpin for CharSearcher<'a>

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impl<'a> Unpin for std::str::Bytes<'a>

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impl<'a> Unpin for CharIndices<'a>

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impl<'a> Unpin for Chars<'a>

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impl<'a> Unpin for EncodeUtf16<'a>

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impl<'a> Unpin for std::str::EscapeDebug<'a>

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impl<'a> Unpin for std::str::EscapeDefault<'a>

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impl<'a> Unpin for std::str::EscapeUnicode<'a>

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impl<'a> Unpin for std::str::Lines<'a>

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impl<'a> Unpin for LinesAny<'a>

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impl<'a> Unpin for SplitAsciiWhitespace<'a>

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impl<'a> Unpin for SplitWhitespace<'a>

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impl<'a> Unpin for Utf8Chunk<'a>

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impl<'a> Unpin for Utf8Chunks<'a>

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impl<'a> Unpin for std::string::Drain<'a>

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impl<'a> Unpin for Context<'a>

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impl<'a, 'b> Unpin for DebugList<'a, 'b>

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impl<'a, 'b> Unpin for DebugMap<'a, 'b>

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impl<'a, 'b> Unpin for DebugSet<'a, 'b>

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impl<'a, 'b> Unpin for DebugStruct<'a, 'b>

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impl<'a, 'b> Unpin for DebugTuple<'a, 'b>

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impl<'a, 'b> Unpin for CharSliceSearcher<'a, 'b>

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impl<'a, 'b> Unpin for StrSearcher<'a, 'b>

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impl<'a, 'b, const N: usize> Unpin for CharArrayRefSearcher<'a, 'b, N>

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impl<'a, 'f> Unpin for VaList<'a, 'f>

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impl<'a, A> Unpin for std::option::Iter<'a, A>

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impl<'a, A> Unpin for std::option::IterMut<'a, A>

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impl<'a, B: ?Sized> Unpin for Cow<'a, B>
where <B as ToOwned>::Owned: Unpin,

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impl<'a, F> Unpin for CharPredicateSearcher<'a, F>
where F: Unpin,

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impl<'a, I> Unpin for ByRefSized<'a, I>

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impl<'a, I, A> Unpin for Splice<'a, I, A>
where I: Unpin,

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impl<'a, K> Unpin for std::collections::hash_set::Drain<'a, K>

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impl<'a, K> Unpin for std::collections::hash_set::Iter<'a, K>

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impl<'a, K, F> Unpin for std::collections::hash_set::ExtractIf<'a, K, F>
where F: Unpin,

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impl<'a, K, V> Unpin for std::collections::hash_map::Entry<'a, K, V>
where K: Unpin,

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impl<'a, K, V> Unpin for std::collections::btree_map::Cursor<'a, K, V>

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impl<'a, K, V> Unpin for std::collections::btree_map::Iter<'a, K, V>

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impl<'a, K, V> Unpin for std::collections::btree_map::IterMut<'a, K, V>

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impl<'a, K, V> Unpin for std::collections::btree_map::Keys<'a, K, V>

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impl<'a, K, V> Unpin for std::collections::btree_map::Range<'a, K, V>

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impl<'a, K, V> Unpin for RangeMut<'a, K, V>

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impl<'a, K, V> Unpin for std::collections::btree_map::Values<'a, K, V>

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impl<'a, K, V> Unpin for std::collections::btree_map::ValuesMut<'a, K, V>

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impl<'a, K, V> Unpin for std::collections::hash_map::Drain<'a, K, V>

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impl<'a, K, V> Unpin for std::collections::hash_map::Iter<'a, K, V>

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impl<'a, K, V> Unpin for std::collections::hash_map::IterMut<'a, K, V>

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impl<'a, K, V> Unpin for std::collections::hash_map::Keys<'a, K, V>

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impl<'a, K, V> Unpin for std::collections::hash_map::OccupiedEntry<'a, K, V>
where K: Unpin,

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impl<'a, K, V> Unpin for std::collections::hash_map::OccupiedError<'a, K, V>
where K: Unpin, V: Unpin,

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impl<'a, K, V> Unpin for std::collections::hash_map::VacantEntry<'a, K, V>
where K: Unpin,

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impl<'a, K, V> Unpin for std::collections::hash_map::Values<'a, K, V>

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impl<'a, K, V> Unpin for std::collections::hash_map::ValuesMut<'a, K, V>

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impl<'a, K, V, A> Unpin for std::collections::btree_map::Entry<'a, K, V, A>
where A: Unpin, K: Unpin,

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impl<'a, K, V, A> Unpin for std::collections::btree_map::CursorMut<'a, K, V, A>

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impl<'a, K, V, A> Unpin for CursorMutKey<'a, K, V, A>

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impl<'a, K, V, A> Unpin for std::collections::btree_map::OccupiedEntry<'a, K, V, A>
where A: Unpin,

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impl<'a, K, V, A> Unpin for std::collections::btree_map::OccupiedError<'a, K, V, A>
where A: Unpin, V: Unpin,

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impl<'a, K, V, A> Unpin for std::collections::btree_map::VacantEntry<'a, K, V, A>
where A: Unpin, K: Unpin,

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impl<'a, K, V, F> Unpin for std::collections::hash_map::ExtractIf<'a, K, V, F>
where F: Unpin,

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impl<'a, K, V, F, A> Unpin for std::collections::btree_map::ExtractIf<'a, K, V, F, A>
where A: Unpin, F: Unpin,

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impl<'a, K, V, S> Unpin for RawEntryMut<'a, K, V, S>

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impl<'a, K, V, S> Unpin for RawEntryBuilder<'a, K, V, S>

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impl<'a, K, V, S> Unpin for RawEntryBuilderMut<'a, K, V, S>

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impl<'a, K, V, S> Unpin for RawOccupiedEntryMut<'a, K, V, S>

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impl<'a, K, V, S> Unpin for RawVacantEntryMut<'a, K, V, S>

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impl<'a, P> Unpin for MatchIndices<'a, P>
where <P as Pattern<'a>>::Searcher: Unpin,

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impl<'a, P> Unpin for Matches<'a, P>
where <P as Pattern<'a>>::Searcher: Unpin,

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impl<'a, P> Unpin for RMatchIndices<'a, P>
where <P as Pattern<'a>>::Searcher: Unpin,

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impl<'a, P> Unpin for RMatches<'a, P>
where <P as Pattern<'a>>::Searcher: Unpin,

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impl<'a, P> Unpin for std::str::RSplit<'a, P>
where <P as Pattern<'a>>::Searcher: Unpin,

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impl<'a, P> Unpin for std::str::RSplitN<'a, P>
where <P as Pattern<'a>>::Searcher: Unpin,

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impl<'a, P> Unpin for RSplitTerminator<'a, P>
where <P as Pattern<'a>>::Searcher: Unpin,

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impl<'a, P> Unpin for std::str::Split<'a, P>
where <P as Pattern<'a>>::Searcher: Unpin,

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impl<'a, P> Unpin for std::str::SplitInclusive<'a, P>
where <P as Pattern<'a>>::Searcher: Unpin,

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impl<'a, P> Unpin for std::str::SplitN<'a, P>
where <P as Pattern<'a>>::Searcher: Unpin,

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impl<'a, P> Unpin for SplitTerminator<'a, P>
where <P as Pattern<'a>>::Searcher: Unpin,

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impl<'a, T> Unpin for std::collections::binary_heap::Iter<'a, T>

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impl<'a, T> Unpin for std::collections::btree_set::Iter<'a, T>

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impl<'a, T> Unpin for std::collections::btree_set::Range<'a, T>

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impl<'a, T> Unpin for std::collections::btree_set::SymmetricDifference<'a, T>

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impl<'a, T> Unpin for std::collections::btree_set::Union<'a, T>

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impl<'a, T> Unpin for std::collections::linked_list::Iter<'a, T>

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impl<'a, T> Unpin for std::collections::linked_list::IterMut<'a, T>

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impl<'a, T> Unpin for std::collections::vec_deque::Iter<'a, T>

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impl<'a, T> Unpin for std::collections::vec_deque::IterMut<'a, T>

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impl<'a, T> Unpin for std::result::Iter<'a, T>

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impl<'a, T> Unpin for std::result::IterMut<'a, T>

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impl<'a, T> Unpin for Chunks<'a, T>

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impl<'a, T> Unpin for ChunksExact<'a, T>

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impl<'a, T> Unpin for ChunksExactMut<'a, T>

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impl<'a, T> Unpin for ChunksMut<'a, T>

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impl<'a, T> Unpin for std::slice::Iter<'a, T>

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impl<'a, T> Unpin for std::slice::IterMut<'a, T>

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impl<'a, T> Unpin for RChunks<'a, T>

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impl<'a, T> Unpin for RChunksExact<'a, T>

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impl<'a, T> Unpin for RChunksExactMut<'a, T>

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impl<'a, T> Unpin for RChunksMut<'a, T>

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impl<'a, T> Unpin for Windows<'a, T>

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impl<'a, T> Unpin for std::sync::mpsc::Iter<'a, T>

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impl<'a, T> Unpin for TryIter<'a, T>

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impl<'a, T, A> Unpin for std::collections::binary_heap::Drain<'a, T, A>

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impl<'a, T, A> Unpin for DrainSorted<'a, T, A>

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impl<'a, T, A> Unpin for PeekMut<'a, T, A>

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impl<'a, T, A> Unpin for std::collections::btree_set::Difference<'a, T, A>

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impl<'a, T, A> Unpin for std::collections::btree_set::Intersection<'a, T, A>

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impl<'a, T, A> Unpin for std::collections::linked_list::Cursor<'a, T, A>

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impl<'a, T, A> Unpin for std::collections::linked_list::CursorMut<'a, T, A>

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impl<'a, T, A> Unpin for std::collections::vec_deque::Drain<'a, T, A>

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impl<'a, T, A> Unpin for std::vec::Drain<'a, T, A>

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impl<'a, T, F, A> Unpin for std::collections::btree_set::ExtractIf<'a, T, F, A>
where A: Unpin, F: Unpin,

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impl<'a, T, F, A> Unpin for std::collections::linked_list::ExtractIf<'a, T, F, A>
where F: Unpin,

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impl<'a, T, F, A> Unpin for std::vec::ExtractIf<'a, T, F, A>
where F: Unpin,

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impl<'a, T, P> Unpin for ChunkBy<'a, T, P>
where P: Unpin,

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impl<'a, T, P> Unpin for ChunkByMut<'a, T, P>
where P: Unpin,

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impl<'a, T, P> Unpin for std::slice::RSplit<'a, T, P>
where P: Unpin,

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impl<'a, T, P> Unpin for RSplitMut<'a, T, P>
where P: Unpin,

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impl<'a, T, P> Unpin for std::slice::RSplitN<'a, T, P>
where P: Unpin,

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impl<'a, T, P> Unpin for RSplitNMut<'a, T, P>
where P: Unpin,

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impl<'a, T, P> Unpin for std::slice::Split<'a, T, P>
where P: Unpin,

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impl<'a, T, P> Unpin for std::slice::SplitInclusive<'a, T, P>
where P: Unpin,

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impl<'a, T, P> Unpin for SplitInclusiveMut<'a, T, P>
where P: Unpin,

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impl<'a, T, P> Unpin for SplitMut<'a, T, P>
where P: Unpin,

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impl<'a, T, P> Unpin for std::slice::SplitN<'a, T, P>
where P: Unpin,

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impl<'a, T, P> Unpin for SplitNMut<'a, T, P>
where P: Unpin,

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impl<'a, T, S> Unpin for std::collections::hash_set::Difference<'a, T, S>

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impl<'a, T, S> Unpin for std::collections::hash_set::Intersection<'a, T, S>

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impl<'a, T, S> Unpin for std::collections::hash_set::SymmetricDifference<'a, T, S>

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impl<'a, T, S> Unpin for std::collections::hash_set::Union<'a, T, S>

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impl<'a, T, const N: usize> Unpin for std::slice::ArrayChunks<'a, T, N>

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impl<'a, T, const N: usize> Unpin for ArrayChunksMut<'a, T, N>

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impl<'a, T, const N: usize> Unpin for ArrayWindows<'a, T, N>

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impl<'a, T: ?Sized> Unpin for MutexGuard<'a, T>

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impl<'a, T: ?Sized> Unpin for RwLockReadGuard<'a, T>

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impl<'a, T: ?Sized> Unpin for RwLockWriteGuard<'a, T>

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impl<'a, const N: usize> Unpin for CharArraySearcher<'a, N>

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impl<'b, T: ?Sized> Unpin for Ref<'b, T>

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impl<'b, T: ?Sized> Unpin for RefMut<'b, T>

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impl<'data> Unpin for BorrowedBuf<'data>

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impl<'f> Unpin for VaListImpl<'f>

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impl<'fd> Unpin for BorrowedFd<'fd>

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impl<'handle> Unpin for BorrowedHandle<'handle>

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impl<'scope, 'env> Unpin for Scope<'scope, 'env>

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impl<'scope, T> Unpin for ScopedJoinHandle<'scope, T>

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impl<'socket> Unpin for BorrowedSocket<'socket>

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impl<A> Unpin for std::iter::Repeat<A>
where A: Unpin,

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impl<A> Unpin for RepeatN<A>
where A: Unpin,

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impl<A> Unpin for std::option::IntoIter<A>
where A: Unpin,

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impl<A, B> Unpin for std::iter::Chain<A, B>
where A: Unpin, B: Unpin,

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impl<A, B> Unpin for Zip<A, B>
where A: Unpin, B: Unpin,

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impl<B> Unpin for std::io::Lines<B>
where B: Unpin,

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impl<B> Unpin for std::io::Split<B>
where B: Unpin,

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impl<B, C> Unpin for ControlFlow<B, C>
where B: Unpin, C: Unpin,

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impl<E> Unpin for Report<E>
where E: Unpin,

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impl<F> Unpin for FormatterFn<F>
where F: Unpin,

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impl<F> Unpin for FromFn<F>
where F: Unpin,

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impl<F> Unpin for OnceWith<F>
where F: Unpin,

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impl<F> Unpin for RepeatWith<F>
where F: Unpin,

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impl<H> Unpin for BuildHasherDefault<H>

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impl<I> Unpin for DecodeUtf16<I>
where I: Unpin,

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impl<I> Unpin for Cloned<I>
where I: Unpin,

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impl<I> Unpin for Copied<I>
where I: Unpin,

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impl<I> Unpin for Cycle<I>
where I: Unpin,

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impl<I> Unpin for Enumerate<I>
where I: Unpin,

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impl<I> Unpin for Flatten<I>
where I: Unpin, <<I as Iterator>::Item as IntoIterator>::IntoIter: Unpin,

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impl<I> Unpin for Fuse<I>
where I: Unpin,

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impl<I> Unpin for Intersperse<I>
where I: Unpin, <I as Iterator>::Item: Unpin,

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impl<I> Unpin for Peekable<I>
where I: Unpin, <I as Iterator>::Item: Unpin,

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impl<I> Unpin for Skip<I>
where I: Unpin,

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impl<I> Unpin for StepBy<I>
where I: Unpin,

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impl<I> Unpin for std::iter::Take<I>
where I: Unpin,

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impl<I, F> Unpin for FilterMap<I, F>
where F: Unpin, I: Unpin,

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impl<I, F> Unpin for Inspect<I, F>
where F: Unpin, I: Unpin,

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impl<I, F> Unpin for Map<I, F>
where F: Unpin, I: Unpin,

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impl<I, F, const N: usize> Unpin for MapWindows<I, F, N>
where F: Unpin, I: Unpin, <I as Iterator>::Item: Unpin,

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impl<I, G> Unpin for IntersperseWith<I, G>
where G: Unpin, I: Unpin, <I as Iterator>::Item: Unpin,

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impl<I, P> Unpin for Filter<I, P>
where I: Unpin, P: Unpin,

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impl<I, P> Unpin for MapWhile<I, P>
where I: Unpin, P: Unpin,

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impl<I, P> Unpin for SkipWhile<I, P>
where I: Unpin, P: Unpin,

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impl<I, P> Unpin for TakeWhile<I, P>
where I: Unpin, P: Unpin,

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impl<I, St, F> Unpin for Scan<I, St, F>
where F: Unpin, I: Unpin, St: Unpin,

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impl<I, U, F> Unpin for FlatMap<I, U, F>
where F: Unpin, I: Unpin, <U as IntoIterator>::IntoIter: Unpin,

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impl<I, const N: usize> Unpin for std::iter::ArrayChunks<I, N>
where I: Unpin, <I as Iterator>::Item: Unpin,

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impl<Idx> Unpin for std::ops::Range<Idx>
where Idx: Unpin,

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impl<Idx> Unpin for RangeFrom<Idx>
where Idx: Unpin,

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impl<Idx> Unpin for RangeInclusive<Idx>
where Idx: Unpin,

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impl<Idx> Unpin for RangeTo<Idx>
where Idx: Unpin,

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impl<Idx> Unpin for RangeToInclusive<Idx>
where Idx: Unpin,

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impl<K> Unpin for std::collections::hash_set::IntoIter<K>
where K: Unpin,

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impl<K, V> Unpin for std::collections::hash_map::IntoIter<K, V>
where K: Unpin, V: Unpin,

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impl<K, V> Unpin for std::collections::hash_map::IntoKeys<K, V>
where K: Unpin, V: Unpin,

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impl<K, V> Unpin for std::collections::hash_map::IntoValues<K, V>
where K: Unpin, V: Unpin,

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impl<K, V, A> Unpin for std::collections::btree_map::IntoIter<K, V, A>
where A: Unpin,

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impl<K, V, A> Unpin for std::collections::btree_map::IntoKeys<K, V, A>
where A: Unpin,

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impl<K, V, A> Unpin for std::collections::btree_map::IntoValues<K, V, A>
where A: Unpin,

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impl<K, V, A> Unpin for BTreeMap<K, V, A>
where A: Unpin,

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impl<K, V, S> Unpin for HashMap<K, V, S>
where K: Unpin, S: Unpin, V: Unpin,

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impl<Ptr> Unpin for Pin<Ptr>
where Ptr: Unpin,

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impl<R> Unpin for std::io::Bytes<R>
where R: Unpin,

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impl<R: ?Sized> Unpin for BufReader<R>
where R: Unpin,

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impl<Ret, T> Unpin for fn(T₁, T₂, …, Tₙ) -> Ret

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impl<T> Unpin for Bound<T>
where T: Unpin,

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impl<T> Unpin for Option<T>
where T: Unpin,

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impl<T> Unpin for TryLockError<T>
where T: Unpin,

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impl<T> Unpin for TrySendError<T>
where T: Unpin,

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impl<T> Unpin for Poll<T>
where T: Unpin,

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impl<T> Unpin for [T]
where T: Unpin,

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impl<T> Unpin for (T₁, T₂, …, Tₙ)
where T: Unpin,

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impl<T> Unpin for OnceCell<T>
where T: Unpin,

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impl<T> Unpin for Reverse<T>
where T: Unpin,

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impl<T> Unpin for Pending<T>

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impl<T> Unpin for std::io::Cursor<T>
where T: Unpin,

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impl<T> Unpin for std::io::Take<T>
where T: Unpin,

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impl<T> Unpin for std::iter::Empty<T>

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impl<T> Unpin for std::iter::Once<T>
where T: Unpin,

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impl<T> Unpin for Rev<T>
where T: Unpin,

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impl<T> Unpin for Discriminant<T>

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impl<T> Unpin for NonZero<T>
where T: Unpin,

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impl<T> Unpin for Saturating<T>
where T: Unpin,

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impl<T> Unpin for Wrapping<T>
where T: Unpin,

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impl<T> Unpin for Yeet<T>
where T: Unpin,

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impl<T> Unpin for AssertUnwindSafe<T>
where T: Unpin,

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impl<T> Unpin for UniqueRc<T>
where T: Unpin,

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impl<T> Unpin for std::result::IntoIter<T>
where T: Unpin,

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impl<T> Unpin for AtomicPtr<T>

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impl<T> Unpin for std::sync::mpsc::IntoIter<T>

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impl<T> Unpin for Receiver<T>

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impl<T> Unpin for SendError<T>
where T: Unpin,

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impl<T> Unpin for Sender<T>

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impl<T> Unpin for SyncSender<T>

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impl<T> Unpin for OnceLock<T>
where T: Unpin,

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impl<T> Unpin for PoisonError<T>
where T: Unpin,

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impl<T> Unpin for JoinHandle<T>

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impl<T> Unpin for LocalKey<T>

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impl<T> Unpin for MaybeUninit<T>
where T: Unpin,

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impl<T, A> Unpin for std::collections::binary_heap::IntoIter<T, A>
where A: Unpin, T: Unpin,

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impl<T, A> Unpin for IntoIterSorted<T, A>
where A: Unpin, T: Unpin,

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impl<T, A> Unpin for std::collections::btree_set::IntoIter<T, A>
where A: Unpin,

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impl<T, A> Unpin for std::collections::linked_list::IntoIter<T, A>
where A: Unpin,

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impl<T, A> Unpin for BTreeSet<T, A>
where A: Unpin,

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impl<T, A> Unpin for BinaryHeap<T, A>
where A: Unpin, T: Unpin,

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impl<T, A> Unpin for LinkedList<T, A>
where A: Unpin,

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impl<T, A> Unpin for VecDeque<T, A>
where A: Unpin, T: Unpin,

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impl<T, A> Unpin for std::collections::vec_deque::IntoIter<T, A>
where A: Unpin, T: Unpin,

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impl<T, A> Unpin for std::vec::IntoIter<T, A>
where A: Unpin, T: Unpin,

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impl<T, A> Unpin for Vec<T, A>
where A: Unpin, T: Unpin,

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impl<T, E> Unpin for Result<T, E>
where E: Unpin, T: Unpin,

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impl<T, F> Unpin for LazyCell<T, F>
where F: Unpin, T: Unpin,

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impl<T, F> Unpin for Successors<T, F>
where F: Unpin, T: Unpin,

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impl<T, F> Unpin for LazyLock<T, F>
where F: Unpin, T: Unpin,

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impl<T, S> Unpin for HashSet<T, S>
where S: Unpin, T: Unpin,

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impl<T, U> Unpin for std::io::Chain<T, U>
where T: Unpin, U: Unpin,

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impl<T, const N: usize> Unpin for [T; N]
where T: Unpin,

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impl<T, const N: usize> Unpin for std::array::IntoIter<T, N>
where T: Unpin,

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impl<T, const N: usize> Unpin for Mask<T, N>
where T: Unpin,

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impl<T, const N: usize> Unpin for Simd<T, N>
where T: Unpin,

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impl<T, const N: usize> Unpin for [MaybeUninit<T>; N]
where T: Unpin,

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impl<T: ?Sized> Unpin for ThinBox<T>
where T: Unpin,

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impl<T: ?Sized> Unpin for Cell<T>
where T: Unpin,

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impl<T: ?Sized> Unpin for RefCell<T>
where T: Unpin,

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impl<T: ?Sized> Unpin for SyncUnsafeCell<T>
where T: Unpin,

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impl<T: ?Sized> Unpin for UnsafeCell<T>
where T: Unpin,

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impl<T: ?Sized> Unpin for ManuallyDrop<T>
where T: Unpin,

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impl<T: ?Sized> Unpin for NonNull<T>

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impl<T: ?Sized> Unpin for Exclusive<T>
where T: Unpin,

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impl<T: ?Sized> Unpin for Mutex<T>
where T: Unpin,

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impl<T: ?Sized> Unpin for RwLock<T>
where T: Unpin,

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impl<T: ?Sized> Unpin for PhantomData<T>
where T: Unpin,

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impl<T: ?Sized, A> Unpin for std::rc::Weak<T, A>
where A: Unpin,

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impl<T: ?Sized, A> Unpin for std::sync::Weak<T, A>
where A: Unpin,

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impl<W> Unpin for IntoInnerError<W>
where W: Unpin,

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impl<W: ?Sized> Unpin for BufWriter<W>
where W: Unpin,

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impl<W: ?Sized> Unpin for LineWriter<W>
where W: Unpin,

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impl<Y, R> Unpin for CoroutineState<Y, R>
where R: Unpin, Y: Unpin,

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impl<const N: usize> Unpin for LaneCount<N>

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impl<const N: usize> Unpin for [u8; N]