Trait std::marker::Send

pub unsafe auto trait Send { }

Types that can be transferred across thread boundaries.

This trait is automatically implemented when the compiler determines it's appropriate.

An example of a non-Send type is the reference-counting pointer rc::Rc. If two threads attempt to clone Rcs that point to the same reference-counted value, they might try to update the reference count at the same time, which is undefined behavior because Rc doesn't use atomic operations. Its cousin sync::Arc does use atomic operations (incurring some overhead) and thus is Send.

See the Nomicon for more details.

Implementations on Foreign Types

impl Send for Argument

impl Send for FormatSpec

impl Send for Alignment

impl Send for Count

impl Send for Position

impl<'_, K, V, S> Send for OccupiedEntry<'_, K, V, S> where
    K: Send,
    S: Send,
    V: Send, 

impl<'_, K, V> Send for IterMut<'_, K, V> where
    K: Send,
    V: Send, 

impl<'_, K, V> Send for RustcOccupiedEntry<'_, K, V> where
    K: Send,
    V: Send, 

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Implementors

impl !Send for Args

impl !Send for ArgsOs

impl Send for std::sync::Once

impl Send for Waker

impl<'_> Send for std::string::Drain<'_>

impl<'_, T> Send for &'_ T where
    T: Sync + ?Sized, 

impl<'_, T> Send for &'_ mut T where
    T: Send + ?Sized, 

impl<'_, T> Send for std::collections::linked_list::Iter<'_, T> where
    T: Sync, 

impl<'_, T> Send for std::collections::linked_list::IterMut<'_, T> where
    T: Send, 

impl<'_, T> Send for std::collections::vec_deque::Drain<'_, T> where
    T: Send, 

impl<'_, T> Send for std::slice::Iter<'_, T> where
    T: Sync, 

impl<'_, T> Send for std::slice::IterMut<'_, T> where
    T: Send, 

impl<'_, T> Send for std::vec::Drain<'_, T> where
    T: Send, 

impl<'_, T: ?Sized> !Send for MutexGuard<'_, T>

impl<'_, T: ?Sized> !Send for RwLockReadGuard<'_, T>

impl<'_, T: ?Sized> !Send for RwLockWriteGuard<'_, T>

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

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

impl<T> !Send for NonNull<T> where
    T: ?Sized, 

NonNull pointers are not Send because the data they reference may be aliased.

impl<T> !Send for Rc<T> where
    T: ?Sized, 

impl<T> !Send for std::rc::Weak<T> where
    T: ?Sized, 

impl<T> Send for Cell<T> where
    T: Send + ?Sized, 

impl<T> Send for RefCell<T> where
    T: Send + ?Sized, 

impl<T> Send for LinkedList<T> where
    T: Send, 

impl<T> Send for AtomicPtr<T>

impl<T> Send for Arc<T> where
    T: Send + Sync + ?Sized, 

impl<T> Send for std::sync::Weak<T> where
    T: Send + Sync + ?Sized, 

impl<T> Send for JoinHandle<T>

impl<T> Send for std::vec::IntoIter<T> where
    T: Send, 

impl<T: Send> Send for Receiver<T>

impl<T: Send> Send for Sender<T>

impl<T: Send> Send for SyncSender<T>

impl<T: ?Sized + Send> Send for Mutex<T>

impl<T: ?Sized + Send> Send for RwLock<T>

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Auto implementors

impl !Send for Excess

impl !Send for Vars

impl !Send for VarsOs

impl !Send for TraitObject

impl !Send for RawWaker

impl Send for BacktraceStatus

impl Send for std::cmp::Ordering

impl Send for TryReserveError

impl Send for Infallible

impl Send for VarError

impl Send for c_void

impl Send for std::fmt::Alignment

impl Send for ErrorKind

impl Send for SeekFrom

impl Send for IpAddr

impl Send for Ipv6MulticastScope

impl Send for Shutdown

impl Send for std::net::SocketAddr

impl Send for FpCategory

impl Send for IntErrorKind

impl Send for SearchStep

impl Send for std::sync::atomic::Ordering

impl Send for RecvTimeoutError

impl Send for TryRecvError

impl Send for bool

impl Send for char

impl Send for f32

impl Send for f64

impl Send for i128

impl Send for i16

impl Send for i32

impl Send for i64

impl Send for i8

impl Send for isize

impl Send for [u8]

impl Send for str

impl Send for u128

impl Send for u16

impl Send for u32

impl Send for u64

impl Send for u8

impl Send for usize

impl Send for AllocErr

impl Send for CannotReallocInPlace

impl Send for Global

impl Send for Layout

impl Send for LayoutErr

impl Send for System

impl Send for TypeId

impl Send for TryFromSliceError

impl Send for std::ascii::EscapeDefault

impl Send for Backtrace

impl Send for BorrowError

impl Send for BorrowMutError

impl Send for CharTryFromError

impl Send for DecodeUtf16Error

impl Send for std::char::EscapeDebug

impl Send for std::char::EscapeDefault

impl Send for std::char::EscapeUnicode

impl Send for ParseCharError

impl Send for ToLowercase

impl Send for ToUppercase

impl Send for UnicodeVersion

impl Send for DefaultHasher

impl Send for RandomState

impl Send for JoinPathsError

impl Send for CStr

impl Send for CString

impl Send for FromBytesWithNulError

impl Send for IntoStringError

impl Send for NulError

impl Send for OsStr

impl Send for OsString

impl Send for std::fmt::Error

impl Send for DirBuilder

impl Send for DirEntry

impl Send for File

impl Send for FileType

impl Send for Metadata

impl Send for OpenOptions

impl Send for Permissions

impl Send for ReadDir

impl Send for SipHasher

impl Send for std::io::Empty

impl Send for std::io::Error

impl Send for Initializer

impl Send for std::io::Repeat

impl Send for Sink

impl Send for Stderr

impl Send for Stdin

impl Send for Stdout

impl Send for PhantomPinned

impl Send for AddrParseError

impl Send for Ipv4Addr

impl Send for Ipv6Addr

impl Send for SocketAddrV4

impl Send for SocketAddrV6

impl Send for TcpListener

impl Send for TcpStream

impl Send for UdpSocket

impl Send for NonZeroI128

impl Send for NonZeroI16

impl Send for NonZeroI32

impl Send for NonZeroI64

impl Send for NonZeroI8

impl Send for NonZeroIsize

impl Send for NonZeroU128

impl Send for NonZeroU16

impl Send for NonZeroU32

impl Send for NonZeroU64

impl Send for NonZeroU8

impl Send for NonZeroUsize

impl Send for ParseFloatError

impl Send for ParseIntError

impl Send for TryFromIntError

impl Send for RangeFull

impl Send for NoneError

impl Send for stat

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

impl Send for UnixDatagram

impl Send for UnixListener

impl Send for UnixStream

impl Send for Path

impl Send for PathBuf

impl Send for StripPrefixError

impl Send for Child

impl Send for ChildStderr

impl Send for ChildStdin

impl Send for ChildStdout

impl Send for Command

impl Send for ExitCode

impl Send for ExitStatus

impl Send for Output

impl Send for Stdio

impl Send for ParseBoolError

impl Send for Utf8Error

impl Send for FromUtf16Error

impl Send for FromUtf8Error

impl Send for String

impl Send for AtomicBool

impl Send for AtomicI16

impl Send for AtomicI32

impl Send for AtomicI64

impl Send for AtomicI8

impl Send for AtomicIsize

impl Send for AtomicU16

impl Send for AtomicU32

impl Send for AtomicU64

impl Send for AtomicU8

impl Send for AtomicUsize

impl Send for RecvError

impl Send for Barrier

impl Send for BarrierWaitResult

impl Send for Condvar

impl Send for OnceState

impl Send for WaitTimeoutResult

impl Send for RawWakerVTable

impl Send for AccessError

impl Send for Builder

impl Send for Thread

impl Send for ThreadId

impl Send for Duration

impl Send for Instant

impl Send for SystemTime

impl Send for SystemTimeError

impl<'a> !Send for ErrorIter<'a>

impl<'a> !Send for Arguments<'a>

impl<'a> !Send for Formatter<'a>

impl<'a> !Send for IoSlice<'a>

impl<'a> !Send for IoSliceMut<'a>

impl<'a> !Send for StderrLock<'a>

impl<'a> !Send for StdinLock<'a>

impl<'a> !Send for StdoutLock<'a>

impl<'a> !Send for PanicInfo<'a>

impl<'a> Send for Component<'a>

impl<'a> Send for Prefix<'a>

impl<'a> Send for SplitPaths<'a>

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

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

impl<'a> Send for EncodeWide<'a>

impl<'a> Send for Location<'a>

impl<'a> Send for Ancestors<'a>

impl<'a> Send for Components<'a>

impl<'a> Send for Display<'a>

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

impl<'a> Send for PrefixComponent<'a>

impl<'a> Send for CharSearcher<'a>

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

impl<'a> Send for CharIndices<'a>

impl<'a> Send for Chars<'a>

impl<'a> Send for EncodeUtf16<'a>

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

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

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

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

impl<'a> Send for LinesAny<'a>

impl<'a> Send for SplitAsciiWhitespace<'a>

impl<'a> Send for SplitWhitespace<'a>

impl<'a> Send for Context<'a>

impl<'a, 'b> !Send for DebugList<'a, 'b>

impl<'a, 'b> !Send for DebugMap<'a, 'b>

impl<'a, 'b> !Send for DebugSet<'a, 'b>

impl<'a, 'b> !Send for DebugStruct<'a, 'b>

impl<'a, 'b> !Send for DebugTuple<'a, 'b>

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

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

impl<'a, 'f> !Send for VaList<'a, 'f>

impl<'a, A> Send for std::option::Iter<'a, A> where
    A: Sync, 

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

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

impl<'a, F> Send for CharPredicateSearcher<'a, F> where
    F: MultiCharEq + Send, 

impl<'a, I> Send for Splice<'a, I> where
    I: Send,
    <I as Iterator>::Item: Send, 

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

impl<'a, K> Send for std::collections::hash_set::Iter<'a, K> where
    K: Sync, 

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

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

impl<'a, K, V> Send for std::collections::btree_map::Iter<'a, K, V> where
    K: Sync,
    V: Sync, 

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

impl<'a, K, V> Send for std::collections::btree_map::Keys<'a, K, V> where
    K: Sync,
    V: Sync, 

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

impl<'a, K, V> Send for std::collections::btree_map::Range<'a, K, V> where
    K: Sync,
    V: Sync, 

impl<'a, K, V> Send for RangeMut<'a, K, V> where
    K: Send,
    V: Send, 

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

impl<'a, K, V> Send for std::collections::btree_map::Values<'a, K, V> where
    K: Sync,
    V: Sync, 

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

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

impl<'a, K, V> Send for std::collections::hash_map::Iter<'a, K, V> where
    K: Sync,
    V: Sync, 

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

impl<'a, K, V> Send for std::collections::hash_map::Keys<'a, K, V> where
    K: Sync,
    V: Sync, 

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

impl<'a, K, V> Send for RawOccupiedEntryMut<'a, K, V> where
    K: Send,
    V: Send, 

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

impl<'a, K, V> Send for std::collections::hash_map::Values<'a, K, V> where
    K: Sync,
    V: Sync, 

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

impl<'a, K, V, S> Send for RawEntryMut<'a, K, V, S> where
    K: Send,
    S: Sync,
    V: Send, 

impl<'a, K, V, S> Send for RawEntryBuilder<'a, K, V, S> where
    K: Sync,
    S: Sync,
    V: Sync, 

impl<'a, K, V, S> Send for RawEntryBuilderMut<'a, K, V, S> where
    K: Send,
    S: Send,
    V: Send, 

impl<'a, K, V, S> Send for RawVacantEntryMut<'a, K, V, S> where
    K: Send,
    S: Sync,
    V: Send, 

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

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

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

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

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

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

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

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

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

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

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

impl<'a, T> !Send for TryIter<'a, T>

impl<'a, T> Send for std::collections::binary_heap::Drain<'a, T> where
    T: Send, 

impl<'a, T> Send for std::collections::binary_heap::Iter<'a, T> where
    T: Sync, 

impl<'a, T> Send for PeekMut<'a, T> where
    T: Send, 

impl<'a, T> Send for std::collections::btree_set::Difference<'a, T> where
    T: Sync, 

impl<'a, T> Send for std::collections::btree_set::Intersection<'a, T> where
    T: Sync, 

impl<'a, T> Send for std::collections::btree_set::Iter<'a, T> where
    T: Sync, 

impl<'a, T> Send for std::collections::btree_set::Range<'a, T> where
    T: Sync, 

impl<'a, T> Send for std::collections::btree_set::SymmetricDifference<'a, T> where
    T: Sync, 

impl<'a, T> Send for std::collections::btree_set::Union<'a, T> where
    T: Sync, 

impl<'a, T> Send for std::collections::vec_deque::Iter<'a, T> where
    T: Sync, 

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

impl<'a, T> Send for std::result::Iter<'a, T> where
    T: Sync, 

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

impl<'a, T> Send for Chunks<'a, T> where
    T: Sync, 

impl<'a, T> Send for ChunksExact<'a, T> where
    T: Sync, 

impl<'a, T> Send for ChunksExactMut<'a, T> where
    T: Send, 

impl<'a, T> Send for ChunksMut<'a, T> where
    T: Send, 

impl<'a, T> Send for RChunks<'a, T> where
    T: Sync, 

impl<'a, T> Send for RChunksExact<'a, T> where
    T: Sync, 

impl<'a, T> Send for RChunksExactMut<'a, T> where
    T: Send, 

impl<'a, T> Send for RChunksMut<'a, T> where
    T: Send, 

impl<'a, T> Send for Windows<'a, T> where
    T: Sync, 

impl<'a, T, F> !Send for std::collections::linked_list::DrainFilter<'a, T, F>

impl<'a, T, F> Send for std::vec::DrainFilter<'a, T, F> where
    F: Send,
    T: Send, 

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

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

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

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

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

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

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

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

impl<'a, T, S> Send for std::collections::hash_set::Difference<'a, T, S> where
    S: Sync,
    T: Sync, 

impl<'a, T, S> Send for std::collections::hash_set::Intersection<'a, T, S> where
    S: Sync,
    T: Sync, 

impl<'a, T, S> Send for std::collections::hash_set::SymmetricDifference<'a, T, S> where
    S: Sync,
    T: Sync, 

impl<'a, T, S> Send for std::collections::hash_set::Union<'a, T, S> where
    S: Sync,
    T: Sync, 

impl<'b, T> !Send for Ref<'b, T>

impl<'b, T> !Send for RefMut<'b, T>

impl<'f> !Send for VaListImpl<'f>

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

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

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

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

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

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

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

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

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

impl<H> Send for BuildHasherDefault<H> where
    H: Send, 

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

impl<K, V> Send for BTreeMap<K, V> where
    K: Send,
    V: Send, 

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

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

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

impl<P> Send for Pin<P> where
    P: Send, 

impl<R> Send for BufReader<R> where
    R: Send, 

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

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

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

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

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

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

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

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

impl<T> Send for BinaryHeap<T> where
    T: Send, 

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

impl<T> Send for BTreeSet<T> where
    T: Send, 

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

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

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

impl<T> Send for VecDeque<T> where
    T: Send, 

impl<T> Send for Cursor<T> where
    T: Send, 

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

impl<T> Send for std::iter::Empty<T> where
    T: Send, 

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

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

impl<T> Send for Discriminant<T>

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

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

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

impl<T> Send for std::sync::mpsc::IntoIter<T> where
    T: Send, 

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

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

impl<T> Send for LocalKey<T>

impl<T> Send for Vec<T> where
    T: Send, 

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

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

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

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

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

impl<T: ?Sized> Send for Box<T> where
    T: Send, 

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

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

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

impl<W> Send for BufWriter<W> where
    W: Send, 

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

impl<W> Send for LineWriter<W> where
    W: Send, 

impl<Y, R> Send for GeneratorState<Y, R> where
    R: Send,
    Y: Send, 

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