# Enum alloc::collections::TryReserveErrorKind

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    pub enum TryReserveErrorKind {
        CapacityOverflow,
        AllocError {
            layout: Layout,
            /* private fields */
        },
    }

🔬 This is a nightly-only experimental API. (`try_reserve_kind` #48043)
Expand description

Details of the allocation that caused a `TryReserveError`

## Variants

### `CapacityOverflow`

🔬 This is a nightly-only experimental API. (`try_reserve_kind` #48043)

Error due to the computed capacity exceeding the collection’s maximum (usually `isize::MAX` bytes).

### `AllocError`

#### Fields

`layout: Layout`
🔬 This is a nightly-only experimental API. (`try_reserve_kind` #48043)

The layout of allocation request that failed

🔬 This is a nightly-only experimental API. (`try_reserve_kind` #48043)

The memory allocator returned an error

## Trait Implementations

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### impl Clone for TryReserveErrorKind

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#### fn clone(&self) -> TryReserveErrorKind

Returns a copy of the value. Read more

1.0.0 · source

#### fn clone_from(&mut self, source: &Self)

Performs copy-assignment from `source`. Read more

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### impl Debug for TryReserveErrorKind

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#### fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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### impl From<LayoutError> for TryReserveErrorKind

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#### fn from(_: LayoutError) -> Self

Always evaluates to `TryReserveErrorKind::CapacityOverflow`.

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### impl From<TryReserveErrorKind> for TryReserveError

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#### fn from(kind: TryReserveErrorKind) -> Self

Converts to this type from the input type.

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### impl PartialEq<TryReserveErrorKind> for TryReserveErrorKind

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#### fn eq(&self, other: &TryReserveErrorKind) -> bool

This method tests for `self` and `other` values to be equal, and is used by `==`. Read more

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#### fn ne(&self, other: &TryReserveErrorKind) -> bool

This method tests for `!=`.

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### impl Eq for TryReserveErrorKind

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### impl StructuralEq for TryReserveErrorKind

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### impl StructuralPartialEq for TryReserveErrorKind

## Auto Trait Implementations

### impl RefUnwindSafe for TryReserveErrorKind

### impl Send for TryReserveErrorKind

### impl Sync for TryReserveErrorKind

### impl Unpin for TryReserveErrorKind

### impl UnwindSafe for TryReserveErrorKind

## Blanket Implementations

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### impl<T> Any for T where
T: 'static + ?Sized,

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#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more

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### impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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### impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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### impl<T> From<T> for T

const: unstable · source

#### fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T, U> Into<U> for T where
U: From<T>,

const: unstable · source

#### fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

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### impl<T> ToOwned for T where
T: Clone,

#### type Owned = T

The resulting type after obtaining ownership.

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#### fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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#### fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (`toowned_clone_into` #41263)

Uses borrowed data to replace owned data, usually by cloning. Read more

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### impl<T, U> TryFrom<U> for T where
U: Into<T>,

#### type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

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### impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

const: unstable · source

#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.