Deleted vendor folder

1 files changed, 0 insertions, 810 deletions

diff --git a/vendor/miette/src/eyreish/error.rs b/vendor/miette/src/eyreish/error.rs
deleted file mode 100644
index 6b0dc34..0000000
--- a/vendor/miette/src/eyreish/error.rs
+++ /dev/null
@@ -1,810 +0,0 @@
-use core::any::TypeId;
-use core::fmt::{self, Debug, Display};
-use core::mem::ManuallyDrop;
-use core::ptr::{self, NonNull};
-use std::error::Error as StdError;
-
-use super::ptr::{Mut, Own, Ref};
-use super::Report;
-use super::ReportHandler;
-use crate::chain::Chain;
-use crate::eyreish::wrapper::WithSourceCode;
-use crate::{Diagnostic, SourceCode};
-use core::ops::{Deref, DerefMut};
-
-impl Report {
-    /// Create a new error object from any error type.
-    ///
-    /// The error type must be thread safe and `'static`, so that the `Report`
-    /// will be as well.
-    ///
-    /// If the error type does not provide a backtrace, a backtrace will be
-    /// created here to ensure that a backtrace exists.
-    #[cfg_attr(track_caller, track_caller)]
-    pub fn new<E>(error: E) -> Self
-    where
-        E: Diagnostic + Send + Sync + 'static,
-    {
-        Report::from_std(error)
-    }
-
-    /// Create a new error object from a printable error message.
-    ///
-    /// If the argument implements std::error::Error, prefer `Report::new`
-    /// instead which preserves the underlying error's cause chain and
-    /// backtrace. If the argument may or may not implement std::error::Error
-    /// now or in the future, use `miette!(err)` which handles either way
-    /// correctly.
-    ///
-    /// `Report::msg("...")` is equivalent to `miette!("...")` but occasionally
-    /// convenient in places where a function is preferable over a macro, such
-    /// as iterator or stream combinators:
-    ///
-    /// ```
-    /// # mod ffi {
-    /// #     pub struct Input;
-    /// #     pub struct Output;
-    /// #     pub async fn do_some_work(_: Input) -> Result<Output, &'static str> {
-    /// #         unimplemented!()
-    /// #     }
-    /// # }
-    /// #
-    /// # use ffi::{Input, Output};
-    /// #
-    /// use futures::stream::{Stream, StreamExt, TryStreamExt};
-    /// use miette::{Report, Result};
-    ///
-    /// async fn demo<S>(stream: S) -> Result<Vec<Output>>
-    /// where
-    ///     S: Stream<Item = Input>,
-    /// {
-    ///     stream
-    ///         .then(ffi::do_some_work) // returns Result<Output, &str>
-    ///         .map_err(Report::msg)
-    ///         .try_collect()
-    ///         .await
-    /// }
-    /// ```
-    #[cfg_attr(track_caller, track_caller)]
-    pub fn msg<M>(message: M) -> Self
-    where
-        M: Display + Debug + Send + Sync + 'static,
-    {
-        Report::from_adhoc(message)
-    }
-
-    /// Create a new error object from a boxed [`Diagnostic`].
-    ///
-    /// The boxed type must be thread safe and 'static, so that the `Report`
-    /// will be as well.
-    ///
-    /// Boxed `Diagnostic`s don't implement `Diagnostic` themselves due to trait coherence issues.
-    /// This method allows you to create a `Report` from a boxed `Diagnostic`.
-    #[cfg_attr(track_caller, track_caller)]
-    pub fn new_boxed(error: Box<dyn Diagnostic + Send + Sync + 'static>) -> Self {
-        Report::from_boxed(error)
-    }
-
-    #[cfg_attr(track_caller, track_caller)]
-    pub(crate) fn from_std<E>(error: E) -> Self
-    where
-        E: Diagnostic + Send + Sync + 'static,
-    {
-        let vtable = &ErrorVTable {
-            object_drop: object_drop::<E>,
-            object_ref: object_ref::<E>,
-            object_ref_stderr: object_ref_stderr::<E>,
-            object_boxed: object_boxed::<E>,
-            object_boxed_stderr: object_boxed_stderr::<E>,
-            object_downcast: object_downcast::<E>,
-            object_drop_rest: object_drop_front::<E>,
-        };
-
-        // Safety: passing vtable that operates on the right type E.
-        let handler = Some(super::capture_handler(&error));
-
-        unsafe { Report::construct(error, vtable, handler) }
-    }
-
-    #[cfg_attr(track_caller, track_caller)]
-    pub(crate) fn from_adhoc<M>(message: M) -> Self
-    where
-        M: Display + Debug + Send + Sync + 'static,
-    {
-        use super::wrapper::MessageError;
-        let error: MessageError<M> = MessageError(message);
-        let vtable = &ErrorVTable {
-            object_drop: object_drop::<MessageError<M>>,
-            object_ref: object_ref::<MessageError<M>>,
-            object_ref_stderr: object_ref_stderr::<MessageError<M>>,
-            object_boxed: object_boxed::<MessageError<M>>,
-            object_boxed_stderr: object_boxed_stderr::<MessageError<M>>,
-            object_downcast: object_downcast::<M>,
-            object_drop_rest: object_drop_front::<M>,
-        };
-
-        // Safety: MessageError is repr(transparent) so it is okay for the
-        // vtable to allow casting the MessageError<M> to M.
-        let handler = Some(super::capture_handler(&error));
-
-        unsafe { Report::construct(error, vtable, handler) }
-    }
-
-    #[cfg_attr(track_caller, track_caller)]
-    pub(crate) fn from_msg<D, E>(msg: D, error: E) -> Self
-    where
-        D: Display + Send + Sync + 'static,
-        E: Diagnostic + Send + Sync + 'static,
-    {
-        let error: ContextError<D, E> = ContextError { msg, error };
-
-        let vtable = &ErrorVTable {
-            object_drop: object_drop::<ContextError<D, E>>,
-            object_ref: object_ref::<ContextError<D, E>>,
-            object_ref_stderr: object_ref_stderr::<ContextError<D, E>>,
-            object_boxed: object_boxed::<ContextError<D, E>>,
-            object_boxed_stderr: object_boxed_stderr::<ContextError<D, E>>,
-            object_downcast: context_downcast::<D, E>,
-            object_drop_rest: context_drop_rest::<D, E>,
-        };
-
-        // Safety: passing vtable that operates on the right type.
-        let handler = Some(super::capture_handler(&error));
-
-        unsafe { Report::construct(error, vtable, handler) }
-    }
-
-    #[cfg_attr(track_caller, track_caller)]
-    pub(crate) fn from_boxed(error: Box<dyn Diagnostic + Send + Sync>) -> Self {
-        use super::wrapper::BoxedError;
-        let error = BoxedError(error);
-        let handler = Some(super::capture_handler(&error));
-
-        let vtable = &ErrorVTable {
-            object_drop: object_drop::<BoxedError>,
-            object_ref: object_ref::<BoxedError>,
-            object_ref_stderr: object_ref_stderr::<BoxedError>,
-            object_boxed: object_boxed::<BoxedError>,
-            object_boxed_stderr: object_boxed_stderr::<BoxedError>,
-            object_downcast: object_downcast::<Box<dyn Diagnostic + Send + Sync>>,
-            object_drop_rest: object_drop_front::<Box<dyn Diagnostic + Send + Sync>>,
-        };
-
-        // Safety: BoxedError is repr(transparent) so it is okay for the vtable
-        // to allow casting to Box<dyn StdError + Send + Sync>.
-        unsafe { Report::construct(error, vtable, handler) }
-    }
-
-    // Takes backtrace as argument rather than capturing it here so that the
-    // user sees one fewer layer of wrapping noise in the backtrace.
-    //
-    // Unsafe because the given vtable must have sensible behavior on the error
-    // value of type E.
-    unsafe fn construct<E>(
-        error: E,
-        vtable: &'static ErrorVTable,
-        handler: Option<Box<dyn ReportHandler>>,
-    ) -> Self
-    where
-        E: Diagnostic + Send + Sync + 'static,
-    {
-        let inner = Box::new(ErrorImpl {
-            vtable,
-            handler,
-            _object: error,
-        });
-        // Erase the concrete type of E from the compile-time type system. This
-        // is equivalent to the safe unsize coercion from Box<ErrorImpl<E>> to
-        // Box<ErrorImpl<dyn StdError + Send + Sync + 'static>> except that the
-        // result is a thin pointer. The necessary behavior for manipulating the
-        // underlying ErrorImpl<E> is preserved in the vtable provided by the
-        // caller rather than a builtin fat pointer vtable.
-        let inner = Own::new(inner).cast::<ErasedErrorImpl>();
-        Report { inner }
-    }
-
-    /// Create a new error from an error message to wrap the existing error.
-    ///
-    /// For attaching a higher level error message to a `Result` as it is
-    /// propagated, the [crate::WrapErr] extension trait may be more
-    /// convenient than this function.
-    ///
-    /// The primary reason to use `error.wrap_err(...)` instead of
-    /// `result.wrap_err(...)` via the `WrapErr` trait would be if the
-    /// message needs to depend on some data held by the underlying error:
-    pub fn wrap_err<D>(self, msg: D) -> Self
-    where
-        D: Display + Send + Sync + 'static,
-    {
-        let handler = unsafe { self.inner.by_mut().deref_mut().handler.take() };
-        let error: ContextError<D, Report> = ContextError { msg, error: self };
-
-        let vtable = &ErrorVTable {
-            object_drop: object_drop::<ContextError<D, Report>>,
-            object_ref: object_ref::<ContextError<D, Report>>,
-            object_ref_stderr: object_ref_stderr::<ContextError<D, Report>>,
-            object_boxed: object_boxed::<ContextError<D, Report>>,
-            object_boxed_stderr: object_boxed_stderr::<ContextError<D, Report>>,
-            object_downcast: context_chain_downcast::<D>,
-            object_drop_rest: context_chain_drop_rest::<D>,
-        };
-
-        // Safety: passing vtable that operates on the right type.
-        unsafe { Report::construct(error, vtable, handler) }
-    }
-
-    /// Compatibility re-export of wrap_err for interop with `anyhow`
-    pub fn context<D>(self, msg: D) -> Self
-    where
-        D: Display + Send + Sync + 'static,
-    {
-        self.wrap_err(msg)
-    }
-
-    /// An iterator of the chain of source errors contained by this Report.
-    ///
-    /// This iterator will visit every error in the cause chain of this error
-    /// object, beginning with the error that this error object was created
-    /// from.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// use miette::Report;
-    /// use std::io;
-    ///
-    /// pub fn underlying_io_error_kind(error: &Report) -> Option<io::ErrorKind> {
-    ///     for cause in error.chain() {
-    ///         if let Some(io_error) = cause.downcast_ref::<io::Error>() {
-    ///             return Some(io_error.kind());
-    ///         }
-    ///     }
-    ///     None
-    /// }
-    /// ```
-    pub fn chain(&self) -> Chain<'_> {
-        unsafe { ErrorImpl::chain(self.inner.by_ref()) }
-    }
-
-    /// The lowest level cause of this error &mdash; this error's cause's
-    /// cause's cause etc.
-    ///
-    /// The root cause is the last error in the iterator produced by
-    /// [`chain()`](Report::chain).
-    pub fn root_cause(&self) -> &(dyn StdError + 'static) {
-        self.chain().last().unwrap()
-    }
-
-    /// Returns true if `E` is the type held by this error object.
-    ///
-    /// For errors constructed from messages, this method returns true if `E`
-    /// matches the type of the message `D` **or** the type of the error on
-    /// which the message has been attached. For details about the
-    /// interaction between message and downcasting, [see here].
-    ///
-    /// [see here]: trait.WrapErr.html#effect-on-downcasting
-    pub fn is<E>(&self) -> bool
-    where
-        E: Display + Debug + Send + Sync + 'static,
-    {
-        self.downcast_ref::<E>().is_some()
-    }
-
-    /// Attempt to downcast the error object to a concrete type.
-    pub fn downcast<E>(self) -> Result<E, Self>
-    where
-        E: Display + Debug + Send + Sync + 'static,
-    {
-        let target = TypeId::of::<E>();
-        let inner = self.inner.by_mut();
-        unsafe {
-            // Use vtable to find NonNull<()> which points to a value of type E
-            // somewhere inside the data structure.
-            let addr = match (vtable(inner.ptr).object_downcast)(inner.by_ref(), target) {
-                Some(addr) => addr.by_mut().extend(),
-                None => return Err(self),
-            };
-
-            // Prepare to read E out of the data structure. We'll drop the rest
-            // of the data structure separately so that E is not dropped.
-            let outer = ManuallyDrop::new(self);
-
-            // Read E from where the vtable found it.
-            let error = addr.cast::<E>().read();
-
-            // Drop rest of the data structure outside of E.
-            (vtable(outer.inner.ptr).object_drop_rest)(outer.inner, target);
-
-            Ok(error)
-        }
-    }
-
-    /// Downcast this error object by reference.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// # use miette::{Report, miette};
-    /// # use std::fmt::{self, Display};
-    /// # use std::task::Poll;
-    /// #
-    /// # #[derive(Debug)]
-    /// # enum DataStoreError {
-    /// #     Censored(()),
-    /// # }
-    /// #
-    /// # impl Display for DataStoreError {
-    /// #     fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-    /// #         unimplemented!()
-    /// #     }
-    /// # }
-    /// #
-    /// # impl std::error::Error for DataStoreError {}
-    /// #
-    /// # const REDACTED_CONTENT: () = ();
-    /// #
-    /// # let error: Report = miette!("...");
-    /// # let root_cause = &error;
-    /// #
-    /// # let ret =
-    /// // If the error was caused by redaction, then return a tombstone instead
-    /// // of the content.
-    /// match root_cause.downcast_ref::<DataStoreError>() {
-    ///     Some(DataStoreError::Censored(_)) => Ok(Poll::Ready(REDACTED_CONTENT)),
-    ///     None => Err(error),
-    /// }
-    /// # ;
-    /// ```
-    pub fn downcast_ref<E>(&self) -> Option<&E>
-    where
-        E: Display + Debug + Send + Sync + 'static,
-    {
-        let target = TypeId::of::<E>();
-        unsafe {
-            // Use vtable to find NonNull<()> which points to a value of type E
-            // somewhere inside the data structure.
-            let addr = (vtable(self.inner.ptr).object_downcast)(self.inner.by_ref(), target)?;
-            Some(addr.cast::<E>().deref())
-        }
-    }
-
-    /// Downcast this error object by mutable reference.
-    pub fn downcast_mut<E>(&mut self) -> Option<&mut E>
-    where
-        E: Display + Debug + Send + Sync + 'static,
-    {
-        let target = TypeId::of::<E>();
-        unsafe {
-            // Use vtable to find NonNull<()> which points to a value of type E
-            // somewhere inside the data structure.
-            let addr =
-                (vtable(self.inner.ptr).object_downcast)(self.inner.by_ref(), target)?.by_mut();
-            Some(addr.cast::<E>().deref_mut())
-        }
-    }
-
-    /// Get a reference to the Handler for this Report.
-    pub fn handler(&self) -> &dyn ReportHandler {
-        unsafe {
-            self.inner
-                .by_ref()
-                .deref()
-                .handler
-                .as_ref()
-                .unwrap()
-                .as_ref()
-        }
-    }
-
-    /// Get a mutable reference to the Handler for this Report.
-    pub fn handler_mut(&mut self) -> &mut dyn ReportHandler {
-        unsafe {
-            self.inner
-                .by_mut()
-                .deref_mut()
-                .handler
-                .as_mut()
-                .unwrap()
-                .as_mut()
-        }
-    }
-
-    /// Provide source code for this error
-    pub fn with_source_code(self, source_code: impl SourceCode + Send + Sync + 'static) -> Report {
-        WithSourceCode {
-            source_code,
-            error: self,
-        }
-        .into()
-    }
-}
-
-impl<E> From<E> for Report
-where
-    E: Diagnostic + Send + Sync + 'static,
-{
-    #[cfg_attr(track_caller, track_caller)]
-    fn from(error: E) -> Self {
-        Report::from_std(error)
-    }
-}
-
-impl Deref for Report {
-    type Target = dyn Diagnostic + Send + Sync + 'static;
-
-    fn deref(&self) -> &Self::Target {
-        unsafe { ErrorImpl::diagnostic(self.inner.by_ref()) }
-    }
-}
-
-impl DerefMut for Report {
-    fn deref_mut(&mut self) -> &mut Self::Target {
-        unsafe { ErrorImpl::diagnostic_mut(self.inner.by_mut()) }
-    }
-}
-
-impl Display for Report {
-    fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
-        unsafe { ErrorImpl::display(self.inner.by_ref(), formatter) }
-    }
-}
-
-impl Debug for Report {
-    fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
-        unsafe { ErrorImpl::debug(self.inner.by_ref(), formatter) }
-    }
-}
-
-impl Drop for Report {
-    fn drop(&mut self) {
-        unsafe {
-            // Invoke the vtable's drop behavior.
-            (vtable(self.inner.ptr).object_drop)(self.inner);
-        }
-    }
-}
-
-struct ErrorVTable {
-    object_drop: unsafe fn(Own<ErasedErrorImpl>),
-    object_ref:
-        unsafe fn(Ref<'_, ErasedErrorImpl>) -> Ref<'_, dyn Diagnostic + Send + Sync + 'static>,
-    object_ref_stderr:
-        unsafe fn(Ref<'_, ErasedErrorImpl>) -> Ref<'_, dyn StdError + Send + Sync + 'static>,
-    #[allow(clippy::type_complexity)]
-    object_boxed: unsafe fn(Own<ErasedErrorImpl>) -> Box<dyn Diagnostic + Send + Sync + 'static>,
-    #[allow(clippy::type_complexity)]
-    object_boxed_stderr:
-        unsafe fn(Own<ErasedErrorImpl>) -> Box<dyn StdError + Send + Sync + 'static>,
-    object_downcast: unsafe fn(Ref<'_, ErasedErrorImpl>, TypeId) -> Option<Ref<'_, ()>>,
-    object_drop_rest: unsafe fn(Own<ErasedErrorImpl>, TypeId),
-}
-
-// Safety: requires layout of *e to match ErrorImpl<E>.
-unsafe fn object_drop<E>(e: Own<ErasedErrorImpl>) {
-    // Cast back to ErrorImpl<E> so that the allocator receives the correct
-    // Layout to deallocate the Box's memory.
-    let unerased = e.cast::<ErrorImpl<E>>().boxed();
-    drop(unerased);
-}
-
-// Safety: requires layout of *e to match ErrorImpl<E>.
-unsafe fn object_drop_front<E>(e: Own<ErasedErrorImpl>, target: TypeId) {
-    // Drop the fields of ErrorImpl other than E as well as the Box allocation,
-    // without dropping E itself. This is used by downcast after doing a
-    // ptr::read to take ownership of the E.
-    let _ = target;
-    let unerased = e.cast::<ErrorImpl<ManuallyDrop<E>>>().boxed();
-    drop(unerased);
-}
-
-// Safety: requires layout of *e to match ErrorImpl<E>.
-unsafe fn object_ref<E>(
-    e: Ref<'_, ErasedErrorImpl>,
-) -> Ref<'_, dyn Diagnostic + Send + Sync + 'static>
-where
-    E: Diagnostic + Send + Sync + 'static,
-{
-    // Attach E's native StdError vtable onto a pointer to self._object.
-    let unerased = e.cast::<ErrorImpl<E>>();
-
-    Ref::from_raw(NonNull::new_unchecked(
-        ptr::addr_of!((*unerased.as_ptr())._object) as *mut E,
-    ))
-}
-
-// Safety: requires layout of *e to match ErrorImpl<E>.
-unsafe fn object_ref_stderr<E>(
-    e: Ref<'_, ErasedErrorImpl>,
-) -> Ref<'_, dyn StdError + Send + Sync + 'static>
-where
-    E: StdError + Send + Sync + 'static,
-{
-    // Attach E's native StdError vtable onto a pointer to self._object.
-    let unerased = e.cast::<ErrorImpl<E>>();
-
-    Ref::from_raw(NonNull::new_unchecked(
-        ptr::addr_of!((*unerased.as_ptr())._object) as *mut E,
-    ))
-}
-
-// Safety: requires layout of *e to match ErrorImpl<E>.
-unsafe fn object_boxed<E>(e: Own<ErasedErrorImpl>) -> Box<dyn Diagnostic + Send + Sync + 'static>
-where
-    E: Diagnostic + Send + Sync + 'static,
-{
-    // Attach ErrorImpl<E>'s native StdError vtable. The StdError impl is below.
-    e.cast::<ErrorImpl<E>>().boxed()
-}
-
-// Safety: requires layout of *e to match ErrorImpl<E>.
-unsafe fn object_boxed_stderr<E>(
-    e: Own<ErasedErrorImpl>,
-) -> Box<dyn StdError + Send + Sync + 'static>
-where
-    E: StdError + Send + Sync + 'static,
-{
-    // Attach ErrorImpl<E>'s native StdError vtable. The StdError impl is below.
-    e.cast::<ErrorImpl<E>>().boxed()
-}
-
-// Safety: requires layout of *e to match ErrorImpl<E>.
-unsafe fn object_downcast<E>(e: Ref<'_, ErasedErrorImpl>, target: TypeId) -> Option<Ref<'_, ()>>
-where
-    E: 'static,
-{
-    if TypeId::of::<E>() == target {
-        // Caller is looking for an E pointer and e is ErrorImpl<E>, take a
-        // pointer to its E field.
-        let unerased = e.cast::<ErrorImpl<E>>();
-
-        Some(
-            Ref::from_raw(NonNull::new_unchecked(
-                ptr::addr_of!((*unerased.as_ptr())._object) as *mut E,
-            ))
-            .cast::<()>(),
-        )
-    } else {
-        None
-    }
-}
-
-// Safety: requires layout of *e to match ErrorImpl<ContextError<D, E>>.
-unsafe fn context_downcast<D, E>(e: Ref<'_, ErasedErrorImpl>, target: TypeId) -> Option<Ref<'_, ()>>
-where
-    D: 'static,
-    E: 'static,
-{
-    if TypeId::of::<D>() == target {
-        let unerased = e.cast::<ErrorImpl<ContextError<D, E>>>().deref();
-        Some(Ref::new(&unerased._object.msg).cast::<()>())
-    } else if TypeId::of::<E>() == target {
-        let unerased = e.cast::<ErrorImpl<ContextError<D, E>>>().deref();
-        Some(Ref::new(&unerased._object.error).cast::<()>())
-    } else {
-        None
-    }
-}
-
-// Safety: requires layout of *e to match ErrorImpl<ContextError<D, E>>.
-unsafe fn context_drop_rest<D, E>(e: Own<ErasedErrorImpl>, target: TypeId)
-where
-    D: 'static,
-    E: 'static,
-{
-    // Called after downcasting by value to either the D or the E and doing a
-    // ptr::read to take ownership of that value.
-    if TypeId::of::<D>() == target {
-        let unerased = e
-            .cast::<ErrorImpl<ContextError<ManuallyDrop<D>, E>>>()
-            .boxed();
-        drop(unerased);
-    } else {
-        let unerased = e
-            .cast::<ErrorImpl<ContextError<D, ManuallyDrop<E>>>>()
-            .boxed();
-        drop(unerased);
-    }
-}
-
-// Safety: requires layout of *e to match ErrorImpl<ContextError<D, Report>>.
-unsafe fn context_chain_downcast<D>(
-    e: Ref<'_, ErasedErrorImpl>,
-    target: TypeId,
-) -> Option<Ref<'_, ()>>
-where
-    D: 'static,
-{
-    let unerased = e.cast::<ErrorImpl<ContextError<D, Report>>>().deref();
-    if TypeId::of::<D>() == target {
-        Some(Ref::new(&unerased._object.msg).cast::<()>())
-    } else {
-        // Recurse down the context chain per the inner error's vtable.
-        let source = &unerased._object.error;
-        (vtable(source.inner.ptr).object_downcast)(source.inner.by_ref(), target)
-    }
-}
-
-// Safety: requires layout of *e to match ErrorImpl<ContextError<D, Report>>.
-unsafe fn context_chain_drop_rest<D>(e: Own<ErasedErrorImpl>, target: TypeId)
-where
-    D: 'static,
-{
-    // Called after downcasting by value to either the D or one of the causes
-    // and doing a ptr::read to take ownership of that value.
-    if TypeId::of::<D>() == target {
-        let unerased = e
-            .cast::<ErrorImpl<ContextError<ManuallyDrop<D>, Report>>>()
-            .boxed();
-        // Drop the entire rest of the data structure rooted in the next Report.
-        drop(unerased);
-    } else {
-        let unerased = e
-            .cast::<ErrorImpl<ContextError<D, ManuallyDrop<Report>>>>()
-            .boxed();
-        // Read out a ManuallyDrop<Box<ErasedErrorImpl>> from the next error.
-        let inner = unerased._object.error.inner;
-        drop(unerased);
-        let vtable = vtable(inner.ptr);
-        // Recursively drop the next error using the same target typeid.
-        (vtable.object_drop_rest)(inner, target);
-    }
-}
-
-// repr C to ensure that E remains in the final position.
-#[repr(C)]
-pub(crate) struct ErrorImpl<E> {
-    vtable: &'static ErrorVTable,
-    pub(crate) handler: Option<Box<dyn ReportHandler>>,
-    // NOTE: Don't use directly. Use only through vtable. Erased type may have
-    // different alignment.
-    _object: E,
-}
-
-// repr C to ensure that ContextError<D, E> has the same layout as
-// ContextError<ManuallyDrop<D>, E> and ContextError<D, ManuallyDrop<E>>.
-#[repr(C)]
-pub(crate) struct ContextError<D, E> {
-    pub(crate) msg: D,
-    pub(crate) error: E,
-}
-
-type ErasedErrorImpl = ErrorImpl<()>;
-
-// Safety: `ErrorVTable` must be the first field of `ErrorImpl`
-unsafe fn vtable(p: NonNull<ErasedErrorImpl>) -> &'static ErrorVTable {
-    (p.as_ptr() as *const &'static ErrorVTable).read()
-}
-
-impl<E> ErrorImpl<E> {
-    fn erase(&self) -> Ref<'_, ErasedErrorImpl> {
-        // Erase the concrete type of E but preserve the vtable in self.vtable
-        // for manipulating the resulting thin pointer. This is analogous to an
-        // unsize coercion.
-        Ref::new(self).cast::<ErasedErrorImpl>()
-    }
-}
-
-impl ErasedErrorImpl {
-    pub(crate) unsafe fn error<'a>(
-        this: Ref<'a, Self>,
-    ) -> &'a (dyn StdError + Send + Sync + 'static) {
-        // Use vtable to attach E's native StdError vtable for the right
-        // original type E.
-        (vtable(this.ptr).object_ref_stderr)(this).deref()
-    }
-
-    pub(crate) unsafe fn diagnostic<'a>(
-        this: Ref<'a, Self>,
-    ) -> &'a (dyn Diagnostic + Send + Sync + 'static) {
-        // Use vtable to attach E's native StdError vtable for the right
-        // original type E.
-        (vtable(this.ptr).object_ref)(this).deref()
-    }
-
-    pub(crate) unsafe fn diagnostic_mut<'a>(
-        this: Mut<'a, Self>,
-    ) -> &'a mut (dyn Diagnostic + Send + Sync + 'static) {
-        // Use vtable to attach E's native StdError vtable for the right
-        // original type E.
-        (vtable(this.ptr).object_ref)(this.by_ref())
-            .by_mut()
-            .deref_mut()
-    }
-
-    pub(crate) unsafe fn chain(this: Ref<'_, Self>) -> Chain<'_> {
-        Chain::new(Self::error(this))
-    }
-}
-
-impl<E> StdError for ErrorImpl<E>
-where
-    E: StdError,
-{
-    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
-        unsafe { ErrorImpl::diagnostic(self.erase()).source() }
-    }
-}
-
-impl<E> Diagnostic for ErrorImpl<E> where E: Diagnostic {}
-
-impl<E> Debug for ErrorImpl<E>
-where
-    E: Debug,
-{
-    fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
-        unsafe { ErrorImpl::debug(self.erase(), formatter) }
-    }
-}
-
-impl<E> Display for ErrorImpl<E>
-where
-    E: Display,
-{
-    fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
-        unsafe { Display::fmt(ErrorImpl::diagnostic(self.erase()), formatter) }
-    }
-}
-
-impl From<Report> for Box<dyn Diagnostic + Send + Sync + 'static> {
-    fn from(error: Report) -> Self {
-        let outer = ManuallyDrop::new(error);
-        unsafe {
-            // Use vtable to attach ErrorImpl<E>'s native StdError vtable for
-            // the right original type E.
-            (vtable(outer.inner.ptr).object_boxed)(outer.inner)
-        }
-    }
-}
-
-impl From<Report> for Box<dyn StdError + Send + Sync + 'static> {
-    fn from(error: Report) -> Self {
-        let outer = ManuallyDrop::new(error);
-        unsafe {
-            // Use vtable to attach ErrorImpl<E>'s native StdError vtable for
-            // the right original type E.
-            (vtable(outer.inner.ptr).object_boxed_stderr)(outer.inner)
-        }
-    }
-}
-
-impl From<Report> for Box<dyn Diagnostic + 'static> {
-    fn from(error: Report) -> Self {
-        Box::<dyn Diagnostic + Send + Sync>::from(error)
-    }
-}
-
-impl From<Report> for Box<dyn StdError + 'static> {
-    fn from(error: Report) -> Self {
-        Box::<dyn StdError + Send + Sync>::from(error)
-    }
-}
-
-impl AsRef<dyn Diagnostic + Send + Sync> for Report {
-    fn as_ref(&self) -> &(dyn Diagnostic + Send + Sync + 'static) {
-        &**self
-    }
-}
-
-impl AsRef<dyn Diagnostic> for Report {
-    fn as_ref(&self) -> &(dyn Diagnostic + 'static) {
-        &**self
-    }
-}
-
-impl AsRef<dyn StdError + Send + Sync> for Report {
-    fn as_ref(&self) -> &(dyn StdError + Send + Sync + 'static) {
-        unsafe { ErrorImpl::error(self.inner.by_ref()) }
-    }
-}
-
-impl AsRef<dyn StdError> for Report {
-    fn as_ref(&self) -> &(dyn StdError + 'static) {
-        unsafe { ErrorImpl::error(self.inner.by_ref()) }
-    }
-}
-
-impl std::borrow::Borrow<dyn Diagnostic> for Report {
-    fn borrow(&self) -> &(dyn Diagnostic + 'static) {
-        self.as_ref()
-    }
-}