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 Send for __m128i

impl Send for CpuidResult

impl Send for __m256

impl Send for __m256d

impl Send for __m256i

impl Send for __m128

impl Send for __m128d

impl Send for __m64

Implementors

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

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

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

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

• impl<T> Send for AtomicPtr<T>

• impl<T> Send for Cell<T> where     T: Send,

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

• impl Send for Waker

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

• impl Send for TaskObj

• impl !Send for LocalWaker

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

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

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

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

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

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

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

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

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

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

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

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

• impl<'a> Send for std::string::Drain<'a>

• impl !Send for Args

• impl !Send for ArgsOs

• impl !Send for Select

• 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<'a, T: ?Sized> !Send for MutexGuard<'a, T>

• impl Send for std::sync::Once

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

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

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

Auto implementors

• impl Send for isize

• impl Send for i8

• impl Send for i16

• impl Send for i32

• impl Send for i64

• impl Send for i128

• impl Send for usize

• impl Send for u8

• impl Send for u16

• impl Send for u32

• impl Send for u64

• impl Send for u128

• impl Send for f32

• impl Send for f64

• impl Send for char

• impl Send for str

• impl Send for str

• impl Send for TypeId

• impl Send for BorrowError

• impl Send for BorrowMutError

• impl<'b, T> !Send for Ref<'b, T>

• impl<'b, T> !Send for RefMut<'b, T>

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

• impl Send for std::cmp::Ordering

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

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

• impl Send for SipHasher

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

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

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

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

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

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

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

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

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

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

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

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

• impl Send for Pinned

• impl<T> Send for Discriminant<T>

• impl<T> Send for ManuallyDrop<T> where     T: Send,

• impl<'a, T: ?Sized> Send for PinMut<'a, T> where     T: Send,

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

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

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

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

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

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

• impl Send for RangeFull

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

• impl !Send for TraitObject

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

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

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

• impl Send for NoneError

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

• impl<T: ?Sized> Send for PinBox<T> where     T: Send,

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

• impl<'a> !Send for Arguments<'a>

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

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

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

• impl Send for std::fmt::Error

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

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

• impl<'a> !Send for Formatter<'a>

• impl Send for std::fmt::Alignment

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

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

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

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

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

• impl<'a, T> Send for ExactChunksMut<'a, T> where     T: Send,

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

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

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

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

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

• 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, P> Send for Matches<'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 Send for Utf8Error

• impl<'a> Send for CharIndices<'a>

• impl<'a, P> Send for std::str::Split<'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 Send for ParseBoolError

• impl<'a> Send for EncodeUtf16<'a>

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

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

• impl<'a> Send for std::str::Chars<'a>

• impl Send for SearchStep

• impl<'a> Send for CharSearcher<'a>

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

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

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

• impl<'a> Send for LinesAny<'a>

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

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

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

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

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

• impl Send for String

• impl Send for FromUtf8Error

• impl Send for FromUtf16Error

• impl Send for ParseError

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

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

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

• impl Send for EscapeUnicode

• impl Send for std::char::EscapeDefault

• impl Send for EscapeDebug

• impl Send for ToLowercase

• impl Send for ToUppercase

• impl Send for DecodeUtf16Error

• impl<I> Send for DecodeUtf8<I> where     I: Send,

• impl Send for UnicodeVersion

• impl Send for CharTryFromError

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

• impl Send for ParseCharError

• impl Send for InvalidSequence

• impl Send for u8x4

• impl Send for m32x8

• impl Send for f64x4

• impl Send for m32x4

• impl Send for i64x2

• impl Send for m16x8

• impl Send for u16x2

• impl Send for m1x64

• impl Send for i64x8

• impl Send for u64x2

• impl Send for i8x2

• impl Send for u32x16

• impl Send for i32x4

• impl Send for u16x16

• impl Send for m32x2

• impl Send for m8x16

• impl Send for u64x8

• impl Send for i32x8

• impl Send for u8x32

• impl Send for u8x2

• impl Send for u16x8

• impl Send for i8x32

• impl Send for i32x16

• impl Send for m8x8

• impl Send for u32x4

• impl Send for m64x4

• impl Send for i16x16

• impl Send for i16x8

• impl Send for u32x8

• impl Send for i16x4

• impl Send for i8x8

• impl Send for i64x4

• impl Send for i32x2

• impl Send for m8x4

• impl Send for m16x4

• impl Send for f32x4

• impl Send for i8x64

• impl Send for m16x2

• impl Send for m1x16

• impl Send for u16x4

• impl Send for u8x8

• impl Send for u64x4

• impl Send for u8x64

• impl Send for i16x32

• impl Send for f64x8

• impl Send for u32x2

• impl Send for u8x16

• impl Send for i8x16

• impl Send for f32x8

• impl Send for f64x2

• impl Send for i8x4

• impl Send for f32x16

• impl Send for m8x32

• impl Send for u16x32

• impl Send for m16x16

• impl Send for i16x2

• impl Send for m64x2

• impl Send for f32x2

• impl Send for m1x32

• impl Send for m8x2

• impl Send for m1x8

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

• impl<'a> !Send for Context<'a>

• impl Send for SpawnErrorKind

• impl Send for SpawnObjError

• impl<T> Send for LocalKey<T>

• impl Send for AccessError

• impl Send for Builder

• impl Send for ThreadId

• impl Send for Thread

• impl<T> Send for JoinHandle<T> where     T: Send,

• impl Send for std::ascii::EscapeDefault

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

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

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

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

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

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

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

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

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

• 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 RangeMut<'a, K, V> where     K: Send,     V: Send,

• 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::btree_map::IterMut<'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::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, T> Send for std::collections::btree_set::Range<'a, T> where     T: Sync,

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

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

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

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

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

• impl Send for CollectionAllocErr

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

• impl<T, S> Send for HashSet<T, S> where     S: Send,     T: 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<K, V> Send for std::collections::hash_map::IntoIter<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::Values<'a, K, V> where     K: Sync,     V: Sync,

• 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::ValuesMut<'a, K, V> where     K: Send,     V: Send,

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

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

• impl Send for RandomState

• impl Send for DefaultHasher

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

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

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

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

• 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::Difference<'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 !Send for Vars

• impl !Send for VarsOs

• impl<'a> Send for SplitPaths<'a>

• impl Send for JoinPathsError

• impl Send for VarError

• impl Send for CString

• impl Send for CStr

• impl Send for NulError

• impl Send for IntoStringError

• impl Send for FromBytesWithNulError

• impl Send for OsString

• impl Send for OsStr

• impl Send for File

• impl Send for Metadata

• impl Send for ReadDir

• impl Send for DirEntry

• impl Send for OpenOptions

• impl Send for Permissions

• impl Send for FileType

• impl Send for DirBuilder

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

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

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

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

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

• impl Send for std::io::Error

• impl Send for Sink

• impl Send for std::io::Empty

• impl Send for std::io::Repeat

• impl Send for Stdin

• impl Send for Stdout

• impl Send for Stderr

• impl<'a> !Send for StdoutLock<'a>

• impl<'a> !Send for StderrLock<'a>

• impl<'a> !Send for StdinLock<'a>

• impl Send for Initializer

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

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

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

• impl<R> Send for std::io::Chars<R> where     R: Send,

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

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

• impl Send for ErrorKind

• impl Send for SeekFrom

• impl Send for CharsError

• impl Send for Ipv4Addr

• impl Send for Ipv6Addr

• impl Send for SocketAddrV4

• impl Send for SocketAddrV6

• impl Send for TcpStream

• impl Send for TcpListener

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

• impl Send for UdpSocket

• impl Send for AddrParseError

• impl Send for IpAddr

• impl Send for Ipv6MulticastScope

• impl Send for std::net::SocketAddr

• impl Send for Shutdown

• impl Send for FpCategory

• impl Send for ParseIntError

• impl Send for ParseFloatError

• impl Send for TryFromIntError

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

• impl Send for NonZeroU8

• impl Send for NonZeroU16

• impl Send for NonZeroU32

• impl Send for NonZeroU64

• impl Send for NonZeroU128

• impl Send for NonZeroUsize

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

• impl Send for UnixStream

• impl Send for UnixListener

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

• impl Send for UnixDatagram

• impl<'a> Send for EncodeWide<'a>

• impl Send for stat

• impl Send for c_void

• impl<'a> !Send for PanicInfo<'a>

• impl<'a> Send for Location<'a>

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

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

• impl<'a> Send for Components<'a>

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

• impl<'a> Send for Ancestors<'a>

• impl Send for PathBuf

• impl Send for Path

• impl Send for StripPrefixError

• impl<'a> Send for Display<'a>

• impl<'a> Send for Prefix<'a>

• impl<'a> Send for Component<'a>

• impl Send for Child

• impl Send for ChildStdin

• impl Send for ChildStdout

• impl Send for ChildStderr

• impl Send for Command

• impl Send for Output

• impl Send for Stdio

• impl Send for ExitStatus

• impl Send for ExitCode

• impl Send for AtomicBool

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

• impl Send for AtomicI8

• impl Send for AtomicU8

• impl Send for AtomicI16

• impl Send for AtomicU16

• impl Send for AtomicI32

• impl Send for AtomicU32

• impl Send for AtomicI64

• impl Send for AtomicU64

• impl Send for AtomicIsize

• impl Send for AtomicUsize

• impl Send for Barrier

• impl Send for BarrierWaitResult

• impl Send for Condvar

• impl Send for WaitTimeoutResult

• impl Send for OnceState

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

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

• impl<'rx, T> !Send for Handle<'rx, T>

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

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

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

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

• impl Send for RecvError

• impl Send for TryRecvError

• impl Send for RecvTimeoutError

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

• impl Send for Duration

• impl Send for Instant

• impl Send for SystemTime

• impl Send for SystemTimeError

• impl Send for Global

• impl !Send for Excess

• impl Send for CannotReallocInPlace

• impl Send for Layout

• impl Send for LayoutErr

• impl Send for AllocErr

• impl Send for System