768 pub unsafe trait PinInit<T: ?Sized, E = Infallible>: Sized {
777     unsafe fn __pinned_init(self, slot: *mut T) -> Result<(), E>;  in __pinned_init()
818     fn pin_chain<F>(self, f: F) -> ChainPinInit<Self, F, T, E>  in pin_chain()  argument
820         F: FnOnce(Pin<&mut T>) -> Result<(), E>,  in pin_chain()
827 pub struct ChainPinInit<I, F, T: ?Sized, E>(I, F, __internal::Invariant<(E, Box<T>)>);
833 unsafe impl<T: ?Sized, E, I, F> PinInit<T, E> for ChainPinInit<I, F, T, E>
835     I: PinInit<T, E>,
836     F: FnOnce(Pin<&mut T>) -> Result<(), E>,
838     unsafe fn __pinned_init(self, slot: *mut T) -> Result<(), E> {  in __pinned_init()
883 pub unsafe trait Init<T: ?Sized, E = Infallible>: PinInit<T, E> {
891     unsafe fn __init(self, slot: *mut T) -> Result<(), E>;  in __init()
920     fn chain<F>(self, f: F) -> ChainInit<Self, F, T, E>  in chain()  argument
922         F: FnOnce(&mut T) -> Result<(), E>,  in chain()
929 pub struct ChainInit<I, F, T: ?Sized, E>(I, F, __internal::Invariant<(E, Box<T>)>);
934 unsafe impl<T: ?Sized, E, I, F> Init<T, E> for ChainInit<I, F, T, E>
936     I: Init<T, E>,
937     F: FnOnce(&mut T) -> Result<(), E>,
939     unsafe fn __init(self, slot: *mut T) -> Result<(), E> {  in __init()
952 unsafe impl<T: ?Sized, E, I, F> PinInit<T, E> for ChainInit<I, F, T, E>
954     I: Init<T, E>,
955     F: FnOnce(&mut T) -> Result<(), E>,
957     unsafe fn __pinned_init(self, slot: *mut T) -> Result<(), E> {  in __pinned_init()
976 pub const unsafe fn pin_init_from_closure<T: ?Sized, E>(  in pin_init_from_closure()
977     f: impl FnOnce(*mut T) -> Result<(), E>,  in pin_init_from_closure()
978 ) -> impl PinInit<T, E> {  in pin_init_from_closure()  argument
995 pub const unsafe fn init_from_closure<T: ?Sized, E>(  in init_from_closure()
996     f: impl FnOnce(*mut T) -> Result<(), E>,  in init_from_closure()
997 ) -> impl Init<T, E> {  in init_from_closure()  argument
1005 pub fn uninit<T, E>() -> impl Init<MaybeUninit<T>, E> {  in uninit()  argument
1019 pub fn init_array_from_fn<I, const N: usize, T, E>(  in init_array_from_fn()  argument
1021 ) -> impl Init<[T; N], E>  in init_array_from_fn()
1023     I: Init<T, E>,  argument
1025     let init = move |slot: *mut [T; N]| {
1026         let slot = slot.cast::<T>();
1063 pub fn pin_init_array_from_fn<I, const N: usize, T, E>(  in pin_init_array_from_fn()  argument
1065 ) -> impl PinInit<[T; N], E>  in pin_init_array_from_fn()
1067     I: PinInit<T, E>,  argument
1069     let init = move |slot: *mut [T; N]| {
1070         let slot = slot.cast::<T>();
1098 unsafe impl<T, E> Init<T, E> for T {  implementation
1099     unsafe fn __init(self, slot: *mut T) -> Result<(), E> {  in __init()
1106 unsafe impl<T, E> PinInit<T, E> for T {  implementation
1107     unsafe fn __pinned_init(self, slot: *mut T) -> Result<(), E> {  in __pinned_init()
1113 pub trait InPlaceInit<T>: Sized {
1118     fn try_pin_init<E>(init: impl PinInit<T, E>) -> Result<Pin<Self>, E>  in try_pin_init()  argument
1126     fn pin_init<E>(init: impl PinInit<T, E>) -> error::Result<Pin<Self>>  in pin_init()  argument
1138     fn try_init<E>(init: impl Init<T, E>) -> Result<Self, E>  in try_init()  argument
1143     fn init<E>(init: impl Init<T, E>) -> error::Result<Self>  in init()  argument
1155 impl<T> InPlaceInit<T> for Box<T> {
1157     fn try_pin_init<E>(init: impl PinInit<T, E>) -> Result<Pin<Self>, E>  in try_pin_init()  argument
1171     fn try_init<E>(init: impl Init<T, E>) -> Result<Self, E>  in try_init()  argument
1185 impl<T> InPlaceInit<T> for UniqueArc<T> {
1187     fn try_pin_init<E>(init: impl PinInit<T, E>) -> Result<Pin<Self>, E>  in try_pin_init()  argument
1201     fn try_init<E>(init: impl Init<T, E>) -> Result<Self, E>  in try_init()  argument
1270 pub fn zeroed<T: Zeroable>() -> impl Init<T> {  in zeroed()  argument
1274         init_from_closure(|slot: *mut T| {  in zeroed()
1303     {<T: ?Sized>} PhantomData<T>, core::marker::PhantomPinned, (),
1306     {<T>} MaybeUninit<T>,
1308     {<T>} Opaque<T>,
1311     {<T: ?Sized + Zeroable>} UnsafeCell<T>,
1322     {<T: ?Sized>} Option<NonNull<T>>,
1323     {<T: ?Sized>} Option<Box<T>>,
1332     {<T>} *mut T, {<T>} *const T,
1336     {<T>} *mut [T], {<T>} *const [T], *mut str, *const str,
1339     {<const N: usize, T: Zeroable>} [T; N], {<T: Zeroable>} Wrapping<T>,