UnwindSafe in std::panic - Rust
Description: A marker trait which represents “panic safe” types in Rust.

## UnwindSafe

# Trait UnwindSafe

1.9.0 · Source

    pub auto trait UnwindSafe { }

Expand description

A marker trait which represents “panic safe” types in Rust.

This trait is implemented by default for many types and behaves similarly in terms of inference of implementation to the `Send` and `Sync` traits. The purpose of this trait is to encode what types are safe to cross a `catch_unwind` boundary with no fear of unwind safety.

### §What is unwind safety?

In Rust a function can “return” early if it either panics or calls a function which transitively panics. This sort of control flow is not always anticipated, and has the possibility of causing subtle bugs through a combination of two critical components:

1. A data structure is in a temporarily invalid state when the thread panics.
2. This broken invariant is then later observed.

Typically in Rust, it is difficult to perform step (2) because catching a panic involves either spawning a thread (which in turn makes it difficult to later witness broken invariants) or using the `catch_unwind` function in this module. Additionally, even if an invariant is witnessed, it typically isn’t a problem in Rust because there are no uninitialized values (like in C or C++).

It is possible, however, for logical invariants to be broken in Rust, which can end up causing behavioral bugs. Another key aspect of unwind safety in Rust is that, in the absence of `unsafe` code, a panic cannot lead to memory unsafety.

That was a bit of a whirlwind tour of unwind safety, but for more information about unwind safety and how it applies to Rust, see an associated RFC.

### §What is `UnwindSafe`?

Now that we’ve got an idea of what unwind safety is in Rust, it’s also important to understand what this trait represents. As mentioned above, one way to witness broken invariants is through the `catch_unwind` function in this module as it allows catching a panic and then re-using the environment of the closure.

Simply put, a type `T` implements `UnwindSafe` if it cannot easily allow witnessing a broken invariant through the use of `catch_unwind` (catching a panic). This trait is an auto trait, so it is automatically implemented for many types, and it is also structurally composed (e.g., a struct is unwind safe if all of its components are unwind safe).

Note, however, that this is not an unsafe trait, so there is not a succinct contract that this trait is providing. Instead it is intended as more of a “speed bump” to alert users of `catch_unwind` that broken invariants may be witnessed and may need to be accounted for.

### §Who implements `UnwindSafe`?

Types such as `&mut T` and `&RefCell<T>` are examples which are not unwind safe. The general idea is that any mutable state which can be shared across `catch_unwind` is not unwind safe by default. This is because it is very easy to witness a broken invariant outside of `catch_unwind` as the data is simply accessed as usual.

Types like `&Mutex<T>`, however, are unwind safe because they implement poisoning by default. They still allow witnessing a broken invariant, but they already provide their own “speed bumps” to do so.

### §When should `UnwindSafe` be used?

It is not intended that most types or functions need to worry about this trait. It is only used as a bound on the `catch_unwind` function and as mentioned above, the lack of `unsafe` means it is mostly an advisory. The `AssertUnwindSafe` wrapper struct can be used to force this trait to be implemented for any closed over variables passed to `catch_unwind`.

## Implementors§

1.9.0 · Source§

### impl<T> !UnwindSafe for &mut T
where T: ?Sized,

1.9.0 · Source§

### impl UnwindSafe for Stderr

1.9.0 · Source§

### impl UnwindSafe for StderrLock<'_>

1.9.0 · Source§

### impl UnwindSafe for Stdout

1.9.0 · Source§

### impl UnwindSafe for StdoutLock<'_>

1.9.0 · Source§

### impl UnwindSafe for std::sync::Condvar

1.59.0 · Source§

### impl UnwindSafe for std::sync::Once

1.64.0 · Source§

### impl<K, V, A> UnwindSafe for BTreeMap<K, V, A>
where A: Allocator + Clone + UnwindSafe, K: RefUnwindSafe, V: RefUnwindSafe,

1.36.0 · Source§

### impl<K, V, S> UnwindSafe for HashMap<K, V, S>
where K: UnwindSafe, V: UnwindSafe, S: UnwindSafe,

1.9.0 · Source§

### impl<T> UnwindSafe for *const T
where T: RefUnwindSafe + ?Sized,

1.9.0 · Source§

### impl<T> UnwindSafe for *mut T
where T: RefUnwindSafe + ?Sized,

1.9.0 · Source§

### impl<T> UnwindSafe for &T
where T: RefUnwindSafe + ?Sized,

1.28.0 · Source§

### impl<T> UnwindSafe for NonZero<T>
where T: ZeroablePrimitive + UnwindSafe,

1.25.0 · Source§

### impl<T> UnwindSafe for NonNull<T>
where T: RefUnwindSafe + ?Sized,

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### impl<T> UnwindSafe for std::sync::mpmc::Receiver<T>

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### impl<T> UnwindSafe for std::sync::mpmc::Sender<T>

1.9.0 · Source§

### impl<T> UnwindSafe for AssertUnwindSafe<T>

1.9.0 · Source§

### impl<T, A> UnwindSafe for Rc<T, A>
where T: RefUnwindSafe + ?Sized, A: Allocator + UnwindSafe,

1.9.0 · Source§

### impl<T, A> UnwindSafe for Arc<T, A>
where T: RefUnwindSafe + ?Sized, A: Allocator + UnwindSafe,

1.9.0 · Source§

### impl<T, A> UnwindSafe for std::vec::IntoIter<T, A>
where T: UnwindSafe, A: Allocator + UnwindSafe,

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### impl<T: UnwindSafe + ?Sized> UnwindSafe for ReentrantLock<T>

1.70.0 · Source§

### impl<T: UnwindSafe> UnwindSafe for OnceLock<T>

1.80.0 · Source§

### impl<T: UnwindSafe, F: UnwindSafe> UnwindSafe for LazyLock<T, F>

1.9.0 · Source§

### impl<T: ?Sized> UnwindSafe for std::sync::Mutex<T>

1.9.0 · Source§

### impl<T: ?Sized> UnwindSafe for std::sync::RwLock<T>

## Auto implementors§

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### impl !UnwindSafe for std::fs::TryLockError

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### impl !UnwindSafe for std::io::Error

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### impl<'a> !UnwindSafe for Request<'a>

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### impl<'a> !UnwindSafe for Formatter<'a>

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### impl<'a> !UnwindSafe for BorrowedCursor<'a>

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### impl<'a> !UnwindSafe for IoSliceMut<'a>

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### impl<'a> !UnwindSafe for ContextBuilder<'a>

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### impl<'a> !UnwindSafe for PanicHookInfo<'a>

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### impl<'a, 'b> !UnwindSafe for DebugList<'a, 'b>

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### impl<'a, 'b> !UnwindSafe for DebugMap<'a, 'b>

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### impl<'a, 'b> !UnwindSafe for DebugSet<'a, 'b>

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### impl<'a, 'b> !UnwindSafe for DebugStruct<'a, 'b>

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### impl<'a, 'b> !UnwindSafe for DebugTuple<'a, 'b>

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### impl<'a, A> !UnwindSafe for std::option::IterMut<'a, A>

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### impl<'a, I> !UnwindSafe for ByRefSized<'a, I>

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### impl<'a, K, A = Global> !UnwindSafe for std::collections::btree_set::CursorMut<'a, K, A>

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### impl<'a, K, A = Global> !UnwindSafe for std::collections::btree_set::CursorMutKey<'a, K, A>

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### impl<'a, K, F, A = Global> !UnwindSafe for std::collections::hash_set::ExtractIf<'a, K, F, A>

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### impl<'a, K, V> !UnwindSafe for std::collections::btree_map::IterMut<'a, K, V>

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### impl<'a, K, V> !UnwindSafe for RangeMut<'a, K, V>

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### impl<'a, K, V> !UnwindSafe for std::collections::btree_map::ValuesMut<'a, K, V>

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### impl<'a, K, V> !UnwindSafe for std::collections::hash_map::IterMut<'a, K, V>

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### impl<'a, K, V> !UnwindSafe for std::collections::hash_map::ValuesMut<'a, K, V>

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### impl<'a, K, V, A = Global> !UnwindSafe for std::collections::btree_map::Entry<'a, K, V, A>

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### impl<'a, K, V, A = Global> !UnwindSafe for std::collections::hash_map::Entry<'a, K, V, A>

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### impl<'a, K, V, A = Global> !UnwindSafe for std::collections::btree_map::CursorMut<'a, K, V, A>

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### impl<'a, K, V, A = Global> !UnwindSafe for std::collections::btree_map::CursorMutKey<'a, K, V, A>

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### impl<'a, K, V, A = Global> !UnwindSafe for std::collections::btree_map::OccupiedEntry<'a, K, V, A>

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### impl<'a, K, V, A = Global> !UnwindSafe for std::collections::btree_map::OccupiedError<'a, K, V, A>

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### impl<'a, K, V, A = Global> !UnwindSafe for std::collections::btree_map::VacantEntry<'a, K, V, A>

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### impl<'a, K, V, A = Global> !UnwindSafe for std::collections::hash_map::OccupiedEntry<'a, K, V, A>

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### impl<'a, K, V, A = Global> !UnwindSafe for std::collections::hash_map::OccupiedError<'a, K, V, A>

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### impl<'a, K, V, A = Global> !UnwindSafe for std::collections::hash_map::VacantEntry<'a, K, V, A>

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### impl<'a, K, V, F, A = Global> !UnwindSafe for std::collections::hash_map::ExtractIf<'a, K, V, F, A>

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### impl<'a, K, V, R, F, A = Global> !UnwindSafe for std::collections::btree_map::ExtractIf<'a, K, V, R, F, A>

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### impl<'a, T> !UnwindSafe for std::collections::linked_list::IterMut<'a, T>

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### impl<'a, T> !UnwindSafe for std::collections::vec_deque::IterMut<'a, T>

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### impl<'a, T> !UnwindSafe for std::result::IterMut<'a, T>

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### impl<'a, T> !UnwindSafe for ChunksExactMut<'a, T>

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### impl<'a, T> !UnwindSafe for ChunksMut<'a, T>

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### impl<'a, T> !UnwindSafe for std::slice::IterMut<'a, T>

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### impl<'a, T> !UnwindSafe for RChunksExactMut<'a, T>

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### impl<'a, T> !UnwindSafe for RChunksMut<'a, T>

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### impl<'a, T> !UnwindSafe for std::sync::nonpoison::MappedMutexGuard<'a, T>

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### impl<'a, T> !UnwindSafe for std::sync::nonpoison::MutexGuard<'a, T>

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### impl<'a, T> !UnwindSafe for std::sync::MappedMutexGuard<'a, T>

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### impl<'a, T, A = Global> !UnwindSafe for std::collections::btree_set::Entry<'a, T, A>

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### impl<'a, T, A = Global> !UnwindSafe for DrainSorted<'a, T, A>

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### impl<'a, T, A = Global> !UnwindSafe for std::collections::binary_heap::PeekMut<'a, T, A>

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### impl<'a, T, A = Global> !UnwindSafe for std::collections::btree_set::OccupiedEntry<'a, T, A>

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### impl<'a, T, A = Global> !UnwindSafe for std::collections::btree_set::VacantEntry<'a, T, A>

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### impl<'a, T, A = Global> !UnwindSafe for std::collections::linked_list::CursorMut<'a, T, A>

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### impl<'a, T, A = Global> !UnwindSafe for std::vec::PeekMut<'a, T, A>

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### impl<'a, T, F, A = Global> !UnwindSafe for std::collections::linked_list::ExtractIf<'a, T, F, A>

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### impl<'a, T, F, A = Global> !UnwindSafe for std::collections::vec_deque::ExtractIf<'a, T, F, A>

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### impl<'a, T, F, A = Global> !UnwindSafe for std::vec::ExtractIf<'a, T, F, A>

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### impl<'a, T, P> !UnwindSafe for ChunkByMut<'a, T, P>

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### impl<'a, T, P> !UnwindSafe for RSplitMut<'a, T, P>

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### impl<'a, T, P> !UnwindSafe for RSplitNMut<'a, T, P>

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### impl<'a, T, P> !UnwindSafe for SplitInclusiveMut<'a, T, P>

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### impl<'a, T, P> !UnwindSafe for SplitMut<'a, T, P>

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### impl<'a, T, P> !UnwindSafe for SplitNMut<'a, T, P>

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### impl<'a, T, R, F, A = Global> !UnwindSafe for std::collections::btree_set::ExtractIf<'a, T, R, F, A>

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### impl<'a, T, S, A = Global> !UnwindSafe for std::collections::hash_set::Entry<'a, T, S, A>

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### impl<'a, T, S, A = Global> !UnwindSafe for std::collections::hash_set::OccupiedEntry<'a, T, S, A>

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### impl<'a, T, S, A = Global> !UnwindSafe for std::collections::hash_set::VacantEntry<'a, T, S, A>

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### impl<'b, T> !UnwindSafe for Ref<'b, T>

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### impl<'b, T> !UnwindSafe for RefMut<'b, T>

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### impl<'data> !UnwindSafe for BorrowedBuf<'data>

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### impl<'rwlock, T> !UnwindSafe for std::sync::nonpoison::MappedRwLockReadGuard<'rwlock, T>

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### impl<'rwlock, T> !UnwindSafe for std::sync::nonpoison::MappedRwLockWriteGuard<'rwlock, T>

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### impl<'rwlock, T> !UnwindSafe for std::sync::nonpoison::RwLockReadGuard<'rwlock, T>

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### impl<'rwlock, T> !UnwindSafe for std::sync::nonpoison::RwLockWriteGuard<'rwlock, T>

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### impl<'rwlock, T> !UnwindSafe for std::sync::MappedRwLockReadGuard<'rwlock, T>

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### impl<'rwlock, T> !UnwindSafe for std::sync::MappedRwLockWriteGuard<'rwlock, T>

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### impl<'rwlock, T> !UnwindSafe for std::sync::RwLockReadGuard<'rwlock, T>

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### impl<'scope, 'env> !UnwindSafe for Scope<'scope, 'env>

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### impl<'scope, T> !UnwindSafe for ScopedJoinHandle<'scope, T>

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### impl<Dyn> !UnwindSafe for DynMetadata<Dyn>

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### impl<K, V, S = RandomState, A = Global> !UnwindSafe for HashMap<K, V, S, A>

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### impl<T> !UnwindSafe for JoinHandle<T>

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### impl<T, A = Global> !UnwindSafe for UniqueRc<T, A>

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### impl<T, A = Global> !UnwindSafe for std::rc::Weak<T, A>

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### impl<W> !UnwindSafe for IntoInnerError<W>

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### impl UnwindSafe for AsciiChar

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### impl UnwindSafe for BacktraceStatus

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### impl UnwindSafe for std::cmp::Ordering

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### impl UnwindSafe for TryReserveErrorKind

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### impl UnwindSafe for Infallible

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### impl UnwindSafe for VarError

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### impl UnwindSafe for FromBytesWithNulError

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### impl UnwindSafe for c_void

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### impl UnwindSafe for std::fmt::Alignment

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### impl UnwindSafe for DebugAsHex

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### impl UnwindSafe for Sign

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### impl UnwindSafe for Locality

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### impl UnwindSafe for AtomicOrdering

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### impl UnwindSafe for BasicBlock

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### impl UnwindSafe for UnwindTerminateReason

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### impl UnwindSafe for SimdAlign

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### impl UnwindSafe for ErrorKind

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### impl UnwindSafe for SeekFrom

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### impl UnwindSafe for TypeKind

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### impl UnwindSafe for IpAddr

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### impl UnwindSafe for Ipv6MulticastScope

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### impl UnwindSafe for Shutdown

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### impl UnwindSafe for SocketAddr

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### impl UnwindSafe for FpCategory

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### impl UnwindSafe for IntErrorKind

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### impl UnwindSafe for OneSidedRangeBound

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### impl UnwindSafe for GetDisjointMutError

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### impl UnwindSafe for SearchStep

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### impl UnwindSafe for std::sync::atomic::Ordering

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### impl UnwindSafe for std::sync::mpsc::RecvTimeoutError

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### impl UnwindSafe for std::sync::mpsc::TryRecvError

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### impl UnwindSafe for BacktraceStyle

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### impl UnwindSafe for bool

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### impl UnwindSafe for char

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### impl UnwindSafe for f16

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### impl UnwindSafe for f32

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### impl UnwindSafe for f64

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### impl UnwindSafe for f128

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### impl UnwindSafe for i8

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### impl UnwindSafe for i16

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### impl UnwindSafe for i32

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### impl UnwindSafe for i64

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### impl UnwindSafe for i128

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### impl UnwindSafe for isize

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### impl UnwindSafe for !

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### impl UnwindSafe for str

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### impl UnwindSafe for u8

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### impl UnwindSafe for u16

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### impl UnwindSafe for u32

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### impl UnwindSafe for u64

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### impl UnwindSafe for u128

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### impl UnwindSafe for ()

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### impl UnwindSafe for usize

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### impl UnwindSafe for AllocError

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### impl UnwindSafe for Global

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### impl UnwindSafe for Layout

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### impl UnwindSafe for LayoutError

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### impl UnwindSafe for System

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### impl UnwindSafe for TypeId

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### impl UnwindSafe for TryFromSliceError

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### impl UnwindSafe for std::ascii::EscapeDefault

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### impl UnwindSafe for Backtrace

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### impl UnwindSafe for BacktraceFrame

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### impl UnwindSafe for ByteStr

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### impl UnwindSafe for ByteString

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### impl UnwindSafe for BorrowError

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### impl UnwindSafe for BorrowMutError

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### impl UnwindSafe for CharTryFromError

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### impl UnwindSafe for DecodeUtf16Error

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### impl UnwindSafe for std::char::EscapeDebug

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### impl UnwindSafe for std::char::EscapeDefault

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### impl UnwindSafe for std::char::EscapeUnicode

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### impl UnwindSafe for ParseCharError

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### impl UnwindSafe for ToLowercase

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### impl UnwindSafe for ToUppercase

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### impl UnwindSafe for TryFromCharError

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### impl UnwindSafe for UnorderedKeyError

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### impl UnwindSafe for TryReserveError

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### impl UnwindSafe for Args

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### impl UnwindSafe for ArgsOs

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### impl UnwindSafe for JoinPathsError

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### impl UnwindSafe for Vars

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### impl UnwindSafe for VarsOs

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### impl UnwindSafe for CStr

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### impl UnwindSafe for CString

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### impl UnwindSafe for FromBytesUntilNulError

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### impl UnwindSafe for FromVecWithNulError

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### impl UnwindSafe for IntoStringError

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### impl UnwindSafe for NulError

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### impl UnwindSafe for OsStr

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### impl UnwindSafe for OsString

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### impl UnwindSafe for std::fmt::Error

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### impl UnwindSafe for FormattingOptions

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### impl UnwindSafe for Dir

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### impl UnwindSafe for DirBuilder

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### impl UnwindSafe for DirEntry

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### impl UnwindSafe for File

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### impl UnwindSafe for FileTimes

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### impl UnwindSafe for FileType

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### impl UnwindSafe for Metadata

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### impl UnwindSafe for OpenOptions

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### impl UnwindSafe for Permissions

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### impl UnwindSafe for ReadDir

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### impl UnwindSafe for DefaultHasher

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### impl UnwindSafe for RandomState

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### impl UnwindSafe for SipHasher

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### impl UnwindSafe for ReturnToArg

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### impl UnwindSafe for UnwindActionArg

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### impl UnwindSafe for std::io::Empty

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### impl UnwindSafe for PipeReader

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### impl UnwindSafe for PipeWriter

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### impl UnwindSafe for std::io::Repeat

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### impl UnwindSafe for Sink

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### impl UnwindSafe for Stdin

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### impl UnwindSafe for WriterPanicked

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### impl UnwindSafe for PhantomPinned

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### impl UnwindSafe for Assume

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### impl UnwindSafe for Array

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### impl UnwindSafe for Bool

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### impl UnwindSafe for Char

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### impl UnwindSafe for Field

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### impl UnwindSafe for Float

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### impl UnwindSafe for Int

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### impl UnwindSafe for Reference

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### impl UnwindSafe for Str

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### impl UnwindSafe for Tuple

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### impl UnwindSafe for Type

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### impl UnwindSafe for AddrParseError

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### impl UnwindSafe for IntoIncoming

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### impl UnwindSafe for Ipv4Addr

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### impl UnwindSafe for Ipv6Addr

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### impl UnwindSafe for SocketAddrV4

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### impl UnwindSafe for SocketAddrV6

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### impl UnwindSafe for TcpListener

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### impl UnwindSafe for TcpStream

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### impl UnwindSafe for UdpSocket

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### impl UnwindSafe for ParseFloatError

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### impl UnwindSafe for ParseIntError

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### impl UnwindSafe for TryFromIntError

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### impl UnwindSafe for RangeFull

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### impl UnwindSafe for OwnedFd

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### impl UnwindSafe for NormalizeError

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### impl UnwindSafe for Path

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### impl UnwindSafe for PathBuf

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### impl UnwindSafe for StripPrefixError

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### impl UnwindSafe for Child

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### impl UnwindSafe for ChildStderr

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### impl UnwindSafe for ChildStdin

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### impl UnwindSafe for ChildStdout

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### impl UnwindSafe for Command

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### impl UnwindSafe for ExitCode

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### impl UnwindSafe for ExitStatus

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### impl UnwindSafe for ExitStatusError

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### impl UnwindSafe for Output

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### impl UnwindSafe for Stdio

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### impl UnwindSafe for std::ptr::Alignment

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### impl UnwindSafe for DefaultRandomSource

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### impl UnwindSafe for ParseBoolError

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### impl UnwindSafe for Utf8Error

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### impl UnwindSafe for FromUtf8Error

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### impl UnwindSafe for FromUtf16Error

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### impl UnwindSafe for IntoChars

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### impl UnwindSafe for String

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### impl UnwindSafe for AtomicBool

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### impl UnwindSafe for AtomicI8

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### impl UnwindSafe for AtomicI16

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### impl UnwindSafe for AtomicI32

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### impl UnwindSafe for AtomicI64

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### impl UnwindSafe for AtomicIsize

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### impl UnwindSafe for AtomicU8

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### impl UnwindSafe for AtomicU16

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### impl UnwindSafe for AtomicU32

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### impl UnwindSafe for AtomicU64

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### impl UnwindSafe for AtomicUsize

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### impl UnwindSafe for RecvError

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### impl UnwindSafe for std::sync::nonpoison::Condvar

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### impl UnwindSafe for WouldBlock

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### impl UnwindSafe for Barrier

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### impl UnwindSafe for BarrierWaitResult

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### impl UnwindSafe for OnceState

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### impl UnwindSafe for WaitTimeoutResult

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### impl UnwindSafe for LocalWaker

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### impl UnwindSafe for RawWaker

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### impl UnwindSafe for RawWakerVTable

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### impl UnwindSafe for Waker

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### impl UnwindSafe for AccessError

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### impl UnwindSafe for Builder

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### impl UnwindSafe for Thread

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### impl UnwindSafe for ThreadId

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### impl UnwindSafe for Duration

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### impl UnwindSafe for Instant

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### impl UnwindSafe for SystemTime

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### impl UnwindSafe for SystemTimeError

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### impl UnwindSafe for TryFromFloatSecsError

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### impl<'a> UnwindSafe for Component<'a>

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### impl<'a> UnwindSafe for Prefix<'a>

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### impl<'a> UnwindSafe for Utf8Pattern<'a>

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### impl<'a> UnwindSafe for SplitPaths<'a>

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### impl<'a> UnwindSafe for std::ffi::os_str::Display<'a>

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### impl<'a> UnwindSafe for VaList<'a>

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### impl<'a> UnwindSafe for Arguments<'a>

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### impl<'a> UnwindSafe for IoSlice<'a>

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### impl<'a> UnwindSafe for StdinLock<'a>

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### impl<'a> UnwindSafe for PhantomContravariantLifetime<'a>

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### impl<'a> UnwindSafe for PhantomCovariantLifetime<'a>

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### impl<'a> UnwindSafe for PhantomInvariantLifetime<'a>

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### impl<'a> UnwindSafe for Incoming<'a>

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### impl<'a> UnwindSafe for Ancestors<'a>

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### impl<'a> UnwindSafe for Components<'a>

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### impl<'a> UnwindSafe for std::path::Display<'a>

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### impl<'a> UnwindSafe for std::path::Iter<'a>

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### impl<'a> UnwindSafe for PrefixComponent<'a>

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### impl<'a> UnwindSafe for CommandArgs<'a>

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### impl<'a> UnwindSafe for CommandEnvs<'a>

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### impl<'a> UnwindSafe for EscapeAscii<'a>

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### impl<'a> UnwindSafe for CharSearcher<'a>

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### impl<'a> UnwindSafe for std::str::Bytes<'a>

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### impl<'a> UnwindSafe for CharIndices<'a>

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### impl<'a> UnwindSafe for Chars<'a>

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### impl<'a> UnwindSafe for EncodeUtf16<'a>

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### impl<'a> UnwindSafe for std::str::EscapeDebug<'a>

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### impl<'a> UnwindSafe for std::str::EscapeDefault<'a>

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### impl<'a> UnwindSafe for std::str::EscapeUnicode<'a>

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### impl<'a> UnwindSafe for std::str::Lines<'a>

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### impl<'a> UnwindSafe for LinesAny<'a>

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### impl<'a> UnwindSafe for SplitAsciiWhitespace<'a>

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### impl<'a> UnwindSafe for SplitWhitespace<'a>

§

### impl<'a> UnwindSafe for Utf8Chunk<'a>

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### impl<'a> UnwindSafe for Utf8Chunks<'a>

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### impl<'a> UnwindSafe for std::string::Drain<'a>

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### impl<'a> UnwindSafe for Context<'a>

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### impl<'a> UnwindSafe for Location<'a>

§

### impl<'a, 'b> UnwindSafe for CharSliceSearcher<'a, 'b>

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### impl<'a, 'b> UnwindSafe for StrSearcher<'a, 'b>

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

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### impl<'a, A> UnwindSafe for std::option::Iter<'a, A>
where A: RefUnwindSafe,

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### impl<'a, B> UnwindSafe for Cow<'a, B>
where <B as ToOwned>::Owned: UnwindSafe, B: RefUnwindSafe + ?Sized,

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### impl<'a, F> UnwindSafe for CharPredicateSearcher<'a, F>
where F: UnwindSafe,

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### impl<'a, I, A> UnwindSafe for std::collections::vec_deque::Splice<'a, I, A>
where I: UnwindSafe, <I as Iterator>::Item: RefUnwindSafe, A: RefUnwindSafe,

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### impl<'a, I, A> UnwindSafe for std::vec::Splice<'a, I, A>
where I: UnwindSafe, <I as Iterator>::Item: RefUnwindSafe, A: RefUnwindSafe,

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### impl<'a, K> UnwindSafe for std::collections::btree_set::Cursor<'a, K>
where K: RefUnwindSafe,

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### impl<'a, K> UnwindSafe for std::collections::hash_set::Iter<'a, K>
where K: RefUnwindSafe,

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### impl<'a, K, A> UnwindSafe for std::collections::hash_set::Drain<'a, K, A>
where A: RefUnwindSafe, K: RefUnwindSafe,

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### impl<'a, K, V> UnwindSafe for std::collections::btree_map::Cursor<'a, K, V>
where K: RefUnwindSafe, V: RefUnwindSafe,

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### impl<'a, K, V> UnwindSafe for std::collections::btree_map::Iter<'a, K, V>
where K: RefUnwindSafe, V: RefUnwindSafe,

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### impl<'a, K, V> UnwindSafe for std::collections::btree_map::Keys<'a, K, V>
where K: RefUnwindSafe, V: RefUnwindSafe,

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### impl<'a, K, V> UnwindSafe for std::collections::btree_map::Range<'a, K, V>
where K: RefUnwindSafe, V: RefUnwindSafe,

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### impl<'a, K, V> UnwindSafe for std::collections::btree_map::Values<'a, K, V>
where K: RefUnwindSafe, V: RefUnwindSafe,

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### impl<'a, K, V> UnwindSafe for std::collections::hash_map::Iter<'a, K, V>
where K: RefUnwindSafe, V: RefUnwindSafe,

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### impl<'a, K, V> UnwindSafe for std::collections::hash_map::Keys<'a, K, V>
where K: RefUnwindSafe, V: RefUnwindSafe,

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### impl<'a, K, V> UnwindSafe for std::collections::hash_map::Values<'a, K, V>
where K: RefUnwindSafe, V: RefUnwindSafe,

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### impl<'a, K, V, A> UnwindSafe for std::collections::hash_map::Drain<'a, K, V, A>
where A: RefUnwindSafe, K: RefUnwindSafe, V: RefUnwindSafe,

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

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

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

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

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

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

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

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

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

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

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

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### impl<'a, T> UnwindSafe for std::collections::binary_heap::Iter<'a, T>
where T: RefUnwindSafe,

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### impl<'a, T> UnwindSafe for std::collections::btree_set::Iter<'a, T>
where T: RefUnwindSafe,

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### impl<'a, T> UnwindSafe for std::collections::btree_set::Range<'a, T>
where T: RefUnwindSafe,

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### impl<'a, T> UnwindSafe for std::collections::btree_set::SymmetricDifference<'a, T>
where T: RefUnwindSafe,

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### impl<'a, T> UnwindSafe for std::collections::btree_set::Union<'a, T>
where T: RefUnwindSafe,

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### impl<'a, T> UnwindSafe for std::collections::linked_list::Iter<'a, T>
where T: RefUnwindSafe,

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### impl<'a, T> UnwindSafe for std::collections::vec_deque::Iter<'a, T>
where T: RefUnwindSafe,

§

### impl<'a, T> UnwindSafe for std::result::Iter<'a, T>
where T: RefUnwindSafe,

§

### impl<'a, T> UnwindSafe for Chunks<'a, T>
where T: RefUnwindSafe,

§

### impl<'a, T> UnwindSafe for ChunksExact<'a, T>
where T: RefUnwindSafe,

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### impl<'a, T> UnwindSafe for std::slice::Iter<'a, T>
where T: RefUnwindSafe,

§

### impl<'a, T> UnwindSafe for RChunks<'a, T>
where T: RefUnwindSafe,

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### impl<'a, T> UnwindSafe for RChunksExact<'a, T>
where T: RefUnwindSafe,

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### impl<'a, T> UnwindSafe for Windows<'a, T>
where T: RefUnwindSafe,

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### impl<'a, T> UnwindSafe for std::sync::mpmc::Iter<'a, T>

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### impl<'a, T> UnwindSafe for std::sync::mpmc::TryIter<'a, T>

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

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### impl<'a, T> UnwindSafe for std::sync::mpsc::TryIter<'a, T>

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### impl<'a, T> UnwindSafe for std::sync::MutexGuard<'a, T>
where T: ?Sized,

§

### impl<'a, T> UnwindSafe for ReentrantLockGuard<'a, T>
where T: RefUnwindSafe + ?Sized,

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### impl<'a, T, A> UnwindSafe for std::collections::binary_heap::Drain<'a, T, A>
where T: RefUnwindSafe, A: RefUnwindSafe,

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### impl<'a, T, A> UnwindSafe for std::collections::btree_set::Difference<'a, T, A>
where T: RefUnwindSafe, A: RefUnwindSafe,

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### impl<'a, T, A> UnwindSafe for std::collections::btree_set::Intersection<'a, T, A>
where T: RefUnwindSafe, A: RefUnwindSafe,

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### impl<'a, T, A> UnwindSafe for std::collections::linked_list::Cursor<'a, T, A>
where A: RefUnwindSafe, T: RefUnwindSafe,

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### impl<'a, T, A> UnwindSafe for std::collections::vec_deque::Drain<'a, T, A>
where T: RefUnwindSafe, A: RefUnwindSafe,

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### impl<'a, T, A> UnwindSafe for std::vec::Drain<'a, T, A>
where T: RefUnwindSafe, A: RefUnwindSafe,

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### impl<'a, T, P> UnwindSafe for ChunkBy<'a, T, P>
where P: UnwindSafe, T: RefUnwindSafe,

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### impl<'a, T, P> UnwindSafe for std::slice::RSplit<'a, T, P>
where P: UnwindSafe, T: RefUnwindSafe,

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### impl<'a, T, P> UnwindSafe for std::slice::RSplitN<'a, T, P>
where P: UnwindSafe, T: RefUnwindSafe,

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### impl<'a, T, P> UnwindSafe for std::slice::Split<'a, T, P>
where P: UnwindSafe, T: RefUnwindSafe,

§

### impl<'a, T, P> UnwindSafe for std::slice::SplitInclusive<'a, T, P>
where P: UnwindSafe, T: RefUnwindSafe,

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### impl<'a, T, P> UnwindSafe for std::slice::SplitN<'a, T, P>
where P: UnwindSafe, T: RefUnwindSafe,

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### impl<'a, T, S, A> UnwindSafe for std::collections::hash_set::Difference<'a, T, S, A>
where S: RefUnwindSafe, A: RefUnwindSafe, T: RefUnwindSafe,

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### impl<'a, T, S, A> UnwindSafe for std::collections::hash_set::Intersection<'a, T, S, A>
where S: RefUnwindSafe, A: RefUnwindSafe, T: RefUnwindSafe,

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### impl<'a, T, S, A> UnwindSafe for std::collections::hash_set::SymmetricDifference<'a, T, S, A>
where S: RefUnwindSafe, A: RefUnwindSafe, T: RefUnwindSafe,

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### impl<'a, T, S, A> UnwindSafe for std::collections::hash_set::Union<'a, T, S, A>
where S: RefUnwindSafe, A: RefUnwindSafe, T: RefUnwindSafe,

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### impl<'a, T, const N: usize> UnwindSafe for ArrayWindows<'a, T, N>
where T: RefUnwindSafe,

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

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### impl<'fd> UnwindSafe for BorrowedFd<'fd>

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### impl<'rwlock, T> UnwindSafe for std::sync::RwLockWriteGuard<'rwlock, T>
where T: ?Sized,

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### impl<A> UnwindSafe for std::iter::Repeat<A>
where A: UnwindSafe,

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### impl<A> UnwindSafe for RepeatN<A>
where A: UnwindSafe,

§

### impl<A> UnwindSafe for std::option::IntoIter<A>
where A: UnwindSafe,

§

### impl<A> UnwindSafe for OptionFlatten<A>
where A: UnwindSafe,

§

### impl<A> UnwindSafe for RangeFromIter<A>
where A: UnwindSafe,

§

### impl<A> UnwindSafe for RangeInclusiveIter<A>
where A: UnwindSafe,

§

### impl<A> UnwindSafe for RangeIter<A>
where A: UnwindSafe,

§

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

§

### impl<A, B> UnwindSafe for Zip<A, B>
where A: UnwindSafe, B: UnwindSafe,

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### impl<B> UnwindSafe for std::io::Lines<B>
where B: UnwindSafe,

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### impl<B> UnwindSafe for std::io::Split<B>
where B: UnwindSafe,

§

### impl<B, C> UnwindSafe for ControlFlow<B, C>
where C: UnwindSafe, B: UnwindSafe,

§

### impl<E> UnwindSafe for Report<E>
where E: UnwindSafe,

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### impl<F> UnwindSafe for std::fmt::FromFn<F>
where F: UnwindSafe,

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### impl<F> UnwindSafe for PollFn<F>
where F: UnwindSafe,

§

### impl<F> UnwindSafe for std::iter::FromFn<F>
where F: UnwindSafe,

§

### impl<F> UnwindSafe for OnceWith<F>
where F: UnwindSafe,

§

### impl<F> UnwindSafe for RepeatWith<F>
where F: UnwindSafe,

§

### impl<G> UnwindSafe for FromCoroutine<G>
where G: UnwindSafe,

§

### impl<H> UnwindSafe for BuildHasherDefault<H>

§

### impl<I> UnwindSafe for FromIter<I>
where I: UnwindSafe,

§

### impl<I> UnwindSafe for DecodeUtf16<I>
where I: UnwindSafe,

§

### impl<I> UnwindSafe for Cloned<I>
where I: UnwindSafe,

§

### impl<I> UnwindSafe for Copied<I>
where I: UnwindSafe,

§

### impl<I> UnwindSafe for Cycle<I>
where I: UnwindSafe,

§

### impl<I> UnwindSafe for Enumerate<I>
where I: UnwindSafe,

§

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

§

### impl<I> UnwindSafe for Fuse<I>
where I: UnwindSafe,

§

### impl<I> UnwindSafe for Intersperse<I>
where <I as Iterator>::Item: Sized + UnwindSafe, I: UnwindSafe,

§

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

§

### impl<I> UnwindSafe for Skip<I>
where I: UnwindSafe,

§

### impl<I> UnwindSafe for StepBy<I>
where I: UnwindSafe,

§

### impl<I> UnwindSafe for std::iter::Take<I>
where I: UnwindSafe,

§

### impl<I, F> UnwindSafe for FilterMap<I, F>
where I: UnwindSafe, F: UnwindSafe,

§

### impl<I, F> UnwindSafe for Inspect<I, F>
where I: UnwindSafe, F: UnwindSafe,

§

### impl<I, F> UnwindSafe for Map<I, F>
where I: UnwindSafe, F: UnwindSafe,

§

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

§

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

§

### impl<I, P> UnwindSafe for Filter<I, P>
where I: UnwindSafe, P: UnwindSafe,

§

### impl<I, P> UnwindSafe for MapWhile<I, P>
where I: UnwindSafe, P: UnwindSafe,

§

### impl<I, P> UnwindSafe for SkipWhile<I, P>
where I: UnwindSafe, P: UnwindSafe,

§

### impl<I, P> UnwindSafe for TakeWhile<I, P>
where I: UnwindSafe, P: UnwindSafe,

§

### impl<I, St, F> UnwindSafe for Scan<I, St, F>
where I: UnwindSafe, F: UnwindSafe, St: UnwindSafe,

§

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

§

### impl<I, const N: usize> UnwindSafe for ArrayChunks<I, N>
where I: UnwindSafe, <I as Iterator>::Item: UnwindSafe,

§

### impl<Idx> UnwindSafe for std::ops::Range<Idx>
where Idx: UnwindSafe,

§

### impl<Idx> UnwindSafe for std::ops::RangeFrom<Idx>
where Idx: UnwindSafe,

§

### impl<Idx> UnwindSafe for std::ops::RangeInclusive<Idx>
where Idx: UnwindSafe,

§

### impl<Idx> UnwindSafe for RangeTo<Idx>
where Idx: UnwindSafe,

§

### impl<Idx> UnwindSafe for std::ops::RangeToInclusive<Idx>
where Idx: UnwindSafe,

§

### impl<Idx> UnwindSafe for std::range::Range<Idx>
where Idx: UnwindSafe,

§

### impl<Idx> UnwindSafe for std::range::RangeFrom<Idx>
where Idx: UnwindSafe,

§

### impl<Idx> UnwindSafe for std::range::RangeInclusive<Idx>
where Idx: UnwindSafe,

§

### impl<Idx> UnwindSafe for std::range::RangeToInclusive<Idx>
where Idx: UnwindSafe,

§

### impl<K, A> UnwindSafe for std::collections::hash_set::IntoIter<K, A>
where A: UnwindSafe, K: UnwindSafe + RefUnwindSafe,

§

### impl<K, V, A> UnwindSafe for std::collections::btree_map::IntoIter<K, V, A>
where A: UnwindSafe, K: RefUnwindSafe, V: RefUnwindSafe,

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### impl<K, V, A> UnwindSafe for std::collections::btree_map::IntoKeys<K, V, A>
where A: UnwindSafe, K: RefUnwindSafe, V: RefUnwindSafe,

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### impl<K, V, A> UnwindSafe for std::collections::btree_map::IntoValues<K, V, A>
where A: UnwindSafe, K: RefUnwindSafe, V: RefUnwindSafe,

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### impl<K, V, A> UnwindSafe for std::collections::hash_map::IntoIter<K, V, A>
where A: UnwindSafe, K: UnwindSafe + RefUnwindSafe, V: UnwindSafe + RefUnwindSafe,

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### impl<K, V, A> UnwindSafe for std::collections::hash_map::IntoKeys<K, V, A>
where A: UnwindSafe, K: UnwindSafe + RefUnwindSafe, V: UnwindSafe + RefUnwindSafe,

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### impl<K, V, A> UnwindSafe for std::collections::hash_map::IntoValues<K, V, A>
where A: UnwindSafe, K: UnwindSafe + RefUnwindSafe, V: UnwindSafe + RefUnwindSafe,

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### impl<P> UnwindSafe for MaybeDangling<P>
where P: UnwindSafe + ?Sized,

§

### impl<Ptr> UnwindSafe for Pin<Ptr>
where Ptr: UnwindSafe,

§

### impl<R> UnwindSafe for BufReader<R>
where R: UnwindSafe + ?Sized,

§

### impl<R> UnwindSafe for std::io::Bytes<R>
where R: UnwindSafe,

§

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

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### impl<T> UnwindSafe for Bound<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for Option<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for std::sync::TryLockError<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for SendTimeoutError<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for TrySendError<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for std::sync::oneshot::RecvTimeoutError<T>

§

### impl<T> UnwindSafe for std::sync::oneshot::TryRecvError<T>

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### impl<T> UnwindSafe for Poll<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for [T]
where T: UnwindSafe,

§

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

§

### impl<T> UnwindSafe for ThinBox<T>
where T: UnwindSafe + ?Sized,

§

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

§

### impl<T> UnwindSafe for OnceCell<T>
where T: UnwindSafe,

§

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

§

### impl<T> UnwindSafe for SyncUnsafeCell<T>
where T: UnwindSafe + ?Sized,

§

### impl<T> UnwindSafe for UnsafeCell<T>
where T: UnwindSafe + ?Sized,

§

### impl<T> UnwindSafe for Reverse<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for Pending<T>

§

### impl<T> UnwindSafe for Ready<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for std::io::Cursor<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for std::io::Take<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for std::iter::Empty<T>

§

### impl<T> UnwindSafe for std::iter::Once<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for Rev<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for PhantomContravariant<T>
where T: ?Sized,

§

### impl<T> UnwindSafe for PhantomCovariant<T>
where T: ?Sized,

§

### impl<T> UnwindSafe for PhantomData<T>
where T: UnwindSafe + ?Sized,

§

### impl<T> UnwindSafe for PhantomInvariant<T>
where T: ?Sized,

§

### impl<T> UnwindSafe for Discriminant<T>
where <T as DiscriminantKind>::Discriminant: UnwindSafe,

§

### impl<T> UnwindSafe for ManuallyDrop<T>
where T: UnwindSafe + ?Sized,

§

### impl<T> UnwindSafe for Saturating<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for Wrapping<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for Yeet<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for UnsafePinned<T>
where T: UnwindSafe + ?Sized,

§

### impl<T> UnwindSafe for std::result::IntoIter<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for AtomicPtr<T>
where T: RefUnwindSafe,

§

### impl<T> UnwindSafe for std::sync::mpmc::IntoIter<T>

§

### impl<T> UnwindSafe for std::sync::mpsc::IntoIter<T>

§

### impl<T> UnwindSafe for std::sync::mpsc::Receiver<T>

§

### impl<T> UnwindSafe for SendError<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for std::sync::mpsc::Sender<T>

§

### impl<T> UnwindSafe for SyncSender<T>

§

### impl<T> UnwindSafe for std::sync::nonpoison::Mutex<T>
where T: UnwindSafe + ?Sized,

§

### impl<T> UnwindSafe for std::sync::nonpoison::RwLock<T>
where T: UnwindSafe + ?Sized,

§

### impl<T> UnwindSafe for std::sync::oneshot::Receiver<T>

§

### impl<T> UnwindSafe for std::sync::oneshot::Sender<T>

§

### impl<T> UnwindSafe for Exclusive<T>
where T: UnwindSafe + ?Sized,

§

### impl<T> UnwindSafe for PoisonError<T>
where T: UnwindSafe,

§

### impl<T> UnwindSafe for LocalKey<T>

§

### impl<T> UnwindSafe for MaybeUninit<T>
where T: UnwindSafe,

§

### impl<T, A> UnwindSafe for Box<T, A>
where A: UnwindSafe, T: UnwindSafe + ?Sized,

§

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

§

### impl<T, A> UnwindSafe for IntoIterSorted<T, A>
where A: UnwindSafe, T: UnwindSafe,

§

### impl<T, A> UnwindSafe for std::collections::btree_set::IntoIter<T, A>
where A: UnwindSafe, T: RefUnwindSafe,

§

### impl<T, A> UnwindSafe for std::collections::linked_list::IntoIter<T, A>
where A: UnwindSafe, T: RefUnwindSafe + UnwindSafe,

§

### impl<T, A> UnwindSafe for BTreeSet<T, A>
where A: UnwindSafe, T: RefUnwindSafe,

§

### impl<T, A> UnwindSafe for BinaryHeap<T, A>
where A: UnwindSafe, T: UnwindSafe,

§

### impl<T, A> UnwindSafe for LinkedList<T, A>
where A: UnwindSafe, T: RefUnwindSafe + UnwindSafe,

§

### impl<T, A> UnwindSafe for VecDeque<T, A>
where A: UnwindSafe, T: UnwindSafe,

§

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

§

### impl<T, A> UnwindSafe for UniqueArc<T, A>
where A: UnwindSafe, T: RefUnwindSafe + UnwindSafe + ?Sized,

§

### impl<T, A> UnwindSafe for std::sync::Weak<T, A>
where A: UnwindSafe, T: RefUnwindSafe + ?Sized,

§

### impl<T, A> UnwindSafe for Vec<T, A>
where A: UnwindSafe, T: UnwindSafe,

§

### impl<T, E> UnwindSafe for Result<T, E>
where T: UnwindSafe, E: UnwindSafe,

§

### impl<T, F> UnwindSafe for LazyCell<T, F>
where F: UnwindSafe, T: UnwindSafe,

§

### impl<T, F> UnwindSafe for Successors<T, F>
where F: UnwindSafe, T: UnwindSafe,

§

### impl<T, F> UnwindSafe for DropGuard<T, F>
where T: UnwindSafe, F: UnwindSafe,

§

### impl<T, S, A> UnwindSafe for HashSet<T, S, A>
where S: UnwindSafe, A: UnwindSafe, T: UnwindSafe,

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

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

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

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

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

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### impl<T, const N: usize> UnwindSafe for [Option<T>; N]
where T: UnwindSafe,

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

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### impl<W> UnwindSafe for BufWriter<W>
where W: UnwindSafe + ?Sized,

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### impl<W> UnwindSafe for LineWriter<W>
where W: UnwindSafe + ?Sized,

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### impl<Y, R> UnwindSafe for CoroutineState<Y, R>
where Y: UnwindSafe, R: UnwindSafe,

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### impl<const N: usize> UnwindSafe for LaneCount<N>

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