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diff --git a/vendor/digest/src/lib.rs b/vendor/digest/src/lib.rs
deleted file mode 100644
index fc82e2e3..00000000
--- a/vendor/digest/src/lib.rs
+++ /dev/null
@@ -1,301 +0,0 @@
-//! This crate provides traits which describe functionality of cryptographic hash
-//! functions and Message Authentication algorithms.
-//!
-//! Traits in this repository are organized into the following levels:
-//!
-//! - **High-level convenience traits**: [`Digest`], [`DynDigest`], [`Mac`].
-//!   Wrappers around lower-level traits for most common use-cases. Users should
-//!   usually prefer using these traits.
-//! - **Mid-level traits**: [`Update`], [`FixedOutput`], [`FixedOutputReset`],
-//!   [`ExtendableOutput`], [`ExtendableOutputReset`], [`XofReader`],
-//!   [`VariableOutput`], [`Reset`], [`KeyInit`], and [`InnerInit`]. These
-//!   traits atomically describe available functionality of an algorithm.
-//! - **Marker traits**: [`HashMarker`], [`MacMarker`]. Used to distinguish
-//!   different algorithm classes.
-//! - **Low-level traits** defined in the [`core_api`] module. These traits
-//!   operate at a block-level and do not contain any built-in buffering.
-//!   They are intended to be implemented by low-level algorithm providers only.
-//!   Usually they should not be used in application-level code.
-//!
-//! Additionally hash functions implement traits from the standard library:
-//! [`Default`], [`Clone`], [`Write`][std::io::Write]. The latter is
-//! feature-gated behind `std` feature, which is usually enabled by default
-//! by hash implementation crates.
-
-#![no_std]
-#![cfg_attr(docsrs, feature(doc_cfg))]
-#![forbid(unsafe_code)]
-#![doc(
-    html_logo_url = "https://raw.githubusercontent.com/RustCrypto/media/6ee8e381/logo.svg",
-    html_favicon_url = "https://raw.githubusercontent.com/RustCrypto/media/6ee8e381/logo.svg"
-)]
-#![warn(missing_docs, rust_2018_idioms)]
-
-#[cfg(feature = "alloc")]
-#[macro_use]
-extern crate alloc;
-
-#[cfg(feature = "std")]
-extern crate std;
-
-#[cfg(feature = "rand_core")]
-#[cfg_attr(docsrs, doc(cfg(feature = "rand_core")))]
-pub use crypto_common::rand_core;
-
-#[cfg(feature = "alloc")]
-use alloc::boxed::Box;
-
-#[cfg(feature = "dev")]
-#[cfg_attr(docsrs, doc(cfg(feature = "dev")))]
-pub mod dev;
-
-#[cfg(feature = "core-api")]
-#[cfg_attr(docsrs, doc(cfg(feature = "core-api")))]
-pub mod core_api;
-mod digest;
-#[cfg(feature = "mac")]
-mod mac;
-
-#[cfg(feature = "core-api")]
-#[cfg_attr(docsrs, doc(cfg(feature = "core-api")))]
-pub use block_buffer;
-#[cfg(feature = "oid")]
-#[cfg_attr(docsrs, doc(cfg(feature = "oid")))]
-pub use const_oid;
-pub use crypto_common;
-
-pub use crate::digest::{Digest, DynDigest, HashMarker};
-pub use crypto_common::{generic_array, typenum, typenum::consts, Output, OutputSizeUser, Reset};
-#[cfg(feature = "mac")]
-pub use crypto_common::{InnerInit, InvalidLength, Key, KeyInit};
-#[cfg(feature = "mac")]
-pub use mac::{CtOutput, Mac, MacError, MacMarker};
-
-use core::fmt;
-
-/// Types which consume data with byte granularity.
-pub trait Update {
-    /// Update state using the provided data.
-    fn update(&mut self, data: &[u8]);
-
-    /// Digest input data in a chained manner.
-    #[must_use]
-    fn chain(mut self, data: impl AsRef<[u8]>) -> Self
-    where
-        Self: Sized,
-    {
-        self.update(data.as_ref());
-        self
-    }
-}
-
-/// Trait for hash functions with fixed-size output.
-pub trait FixedOutput: Update + OutputSizeUser + Sized {
-    /// Consume value and write result into provided array.
-    fn finalize_into(self, out: &mut Output<Self>);
-
-    /// Retrieve result and consume the hasher instance.
-    #[inline]
-    fn finalize_fixed(self) -> Output<Self> {
-        let mut out = Default::default();
-        self.finalize_into(&mut out);
-        out
-    }
-}
-
-/// Trait for hash functions with fixed-size output able to reset themselves.
-pub trait FixedOutputReset: FixedOutput + Reset {
-    /// Write result into provided array and reset the hasher state.
-    fn finalize_into_reset(&mut self, out: &mut Output<Self>);
-
-    /// Retrieve result and reset the hasher state.
-    #[inline]
-    fn finalize_fixed_reset(&mut self) -> Output<Self> {
-        let mut out = Default::default();
-        self.finalize_into_reset(&mut out);
-        out
-    }
-}
-
-/// Trait for reader types which are used to extract extendable output
-/// from a XOF (extendable-output function) result.
-pub trait XofReader {
-    /// Read output into the `buffer`. Can be called an unlimited number of times.
-    fn read(&mut self, buffer: &mut [u8]);
-
-    /// Read output into a boxed slice of the specified size.
-    ///
-    /// Can be called an unlimited number of times in combination with `read`.
-    ///
-    /// `Box<[u8]>` is used instead of `Vec<u8>` to save stack space, since
-    /// they have size of 2 and 3 words respectively.
-    #[cfg(feature = "alloc")]
-    #[cfg_attr(docsrs, doc(cfg(feature = "alloc")))]
-    fn read_boxed(&mut self, n: usize) -> Box<[u8]> {
-        let mut buf = vec![0u8; n].into_boxed_slice();
-        self.read(&mut buf);
-        buf
-    }
-}
-
-/// Trait for hash functions with extendable-output (XOF).
-pub trait ExtendableOutput: Sized + Update {
-    /// Reader
-    type Reader: XofReader;
-
-    /// Retrieve XOF reader and consume hasher instance.
-    fn finalize_xof(self) -> Self::Reader;
-
-    /// Finalize XOF and write result into `out`.
-    fn finalize_xof_into(self, out: &mut [u8]) {
-        self.finalize_xof().read(out);
-    }
-
-    /// Compute hash of `data` and write it into `output`.
-    fn digest_xof(input: impl AsRef<[u8]>, output: &mut [u8])
-    where
-        Self: Default,
-    {
-        let mut hasher = Self::default();
-        hasher.update(input.as_ref());
-        hasher.finalize_xof().read(output);
-    }
-
-    /// Retrieve result into a boxed slice of the specified size and consume
-    /// the hasher.
-    ///
-    /// `Box<[u8]>` is used instead of `Vec<u8>` to save stack space, since
-    /// they have size of 2 and 3 words respectively.
-    #[cfg(feature = "alloc")]
-    #[cfg_attr(docsrs, doc(cfg(feature = "alloc")))]
-    fn finalize_boxed(self, output_size: usize) -> Box<[u8]> {
-        let mut buf = vec![0u8; output_size].into_boxed_slice();
-        self.finalize_xof().read(&mut buf);
-        buf
-    }
-}
-
-/// Trait for hash functions with extendable-output (XOF) able to reset themselves.
-pub trait ExtendableOutputReset: ExtendableOutput + Reset {
-    /// Retrieve XOF reader and reset hasher instance state.
-    fn finalize_xof_reset(&mut self) -> Self::Reader;
-
-    /// Finalize XOF, write result into `out`, and reset the hasher state.
-    fn finalize_xof_reset_into(&mut self, out: &mut [u8]) {
-        self.finalize_xof_reset().read(out);
-    }
-
-    /// Retrieve result into a boxed slice of the specified size and reset
-    /// the hasher state.
-    ///
-    /// `Box<[u8]>` is used instead of `Vec<u8>` to save stack space, since
-    /// they have size of 2 and 3 words respectively.
-    #[cfg(feature = "alloc")]
-    #[cfg_attr(docsrs, doc(cfg(feature = "alloc")))]
-    fn finalize_boxed_reset(&mut self, output_size: usize) -> Box<[u8]> {
-        let mut buf = vec![0u8; output_size].into_boxed_slice();
-        self.finalize_xof_reset().read(&mut buf);
-        buf
-    }
-}
-
-/// Trait for hash functions with variable-size output.
-pub trait VariableOutput: Sized + Update {
-    /// Maximum size of output hash.
-    const MAX_OUTPUT_SIZE: usize;
-
-    /// Create new hasher instance with the given output size.
-    ///
-    /// It will return `Err(InvalidOutputSize)` in case if hasher can not return
-    /// hash of the specified output size.
-    fn new(output_size: usize) -> Result<Self, InvalidOutputSize>;
-
-    /// Get output size of the hasher instance provided to the `new` method
-    fn output_size(&self) -> usize;
-
-    /// Write result into the output buffer.
-    ///
-    /// Returns `Err(InvalidOutputSize)` if `out` size is not equal to
-    /// `self.output_size()`.
-    fn finalize_variable(self, out: &mut [u8]) -> Result<(), InvalidBufferSize>;
-
-    /// Compute hash of `data` and write it to `output`.
-    ///
-    /// Length of the output hash is determined by `output`. If `output` is
-    /// bigger than `Self::MAX_OUTPUT_SIZE`, this method returns
-    /// `InvalidOutputSize`.
-    fn digest_variable(
-        input: impl AsRef<[u8]>,
-        output: &mut [u8],
-    ) -> Result<(), InvalidOutputSize> {
-        let mut hasher = Self::new(output.len())?;
-        hasher.update(input.as_ref());
-        hasher
-            .finalize_variable(output)
-            .map_err(|_| InvalidOutputSize)
-    }
-
-    /// Retrieve result into a boxed slice and consume hasher.
-    ///
-    /// `Box<[u8]>` is used instead of `Vec<u8>` to save stack space, since
-    /// they have size of 2 and 3 words respectively.
-    #[cfg(feature = "alloc")]
-    #[cfg_attr(docsrs, doc(cfg(feature = "alloc")))]
-    fn finalize_boxed(self) -> Box<[u8]> {
-        let n = self.output_size();
-        let mut buf = vec![0u8; n].into_boxed_slice();
-        self.finalize_variable(&mut buf)
-            .expect("buf length is equal to output_size");
-        buf
-    }
-}
-
-/// Trait for hash functions with variable-size output able to reset themselves.
-pub trait VariableOutputReset: VariableOutput + Reset {
-    /// Write result into the output buffer and reset the hasher state.
-    ///
-    /// Returns `Err(InvalidOutputSize)` if `out` size is not equal to
-    /// `self.output_size()`.
-    fn finalize_variable_reset(&mut self, out: &mut [u8]) -> Result<(), InvalidBufferSize>;
-
-    /// Retrieve result into a boxed slice and reset the hasher state.
-    ///
-    /// `Box<[u8]>` is used instead of `Vec<u8>` to save stack space, since
-    /// they have size of 2 and 3 words respectively.
-    #[cfg(feature = "alloc")]
-    #[cfg_attr(docsrs, doc(cfg(feature = "alloc")))]
-    fn finalize_boxed_reset(&mut self) -> Box<[u8]> {
-        let n = self.output_size();
-        let mut buf = vec![0u8; n].into_boxed_slice();
-        self.finalize_variable_reset(&mut buf)
-            .expect("buf length is equal to output_size");
-        buf
-    }
-}
-
-/// The error type used in variable hash traits.
-#[derive(Clone, Copy, Debug, Default)]
-pub struct InvalidOutputSize;
-
-impl fmt::Display for InvalidOutputSize {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        f.write_str("invalid output size")
-    }
-}
-
-#[cfg(feature = "std")]
-#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
-impl std::error::Error for InvalidOutputSize {}
-
-/// Buffer length is not equal to hash output size.
-#[derive(Default, Debug, Copy, Clone, Eq, PartialEq)]
-pub struct InvalidBufferSize;
-
-impl fmt::Display for InvalidBufferSize {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        f.write_str("invalid buffer length")
-    }
-}
-
-#[cfg(feature = "std")]
-impl std::error::Error for InvalidBufferSize {}