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diff --git a/vendor/tempdir/src/lib.rs b/vendor/tempdir/src/lib.rs
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--- a/vendor/tempdir/src/lib.rs
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@@ -1,360 +0,0 @@
-// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
-       html_favicon_url = "https://www.rust-lang.org/favicon.ico",
-       html_root_url = "https://docs.rs/tempdir/0.3.7")]
-#![cfg_attr(test, deny(warnings))]
-
-//! Temporary directories of files.
-//!
-//! The [`TempDir`] type creates a directory on the file system that
-//! is deleted once it goes out of scope. At construction, the
-//! `TempDir` creates a new directory with a randomly generated name
-//! and a prefix of your choosing.
-//!
-//! [`TempDir`]: struct.TempDir.html
-//! [`std::env::temp_dir()`]: https://doc.rust-lang.org/std/env/fn.temp_dir.html
-//!
-//! # Examples
-//!
-//! ```
-//! extern crate tempdir;
-//!
-//! use std::fs::File;
-//! use std::io::{self, Write};
-//! use tempdir::TempDir;
-//!
-//! fn main() {
-//!     if let Err(_) = run() {
-//!         ::std::process::exit(1);
-//!     }
-//! }
-//!
-//! fn run() -> Result<(), io::Error> {
-//!     // Create a directory inside of `std::env::temp_dir()`, named with
-//!     // the prefix "example".
-//!     let tmp_dir = TempDir::new("example")?;
-//!     let file_path = tmp_dir.path().join("my-temporary-note.txt");
-//!     let mut tmp_file = File::create(file_path)?;
-//!     writeln!(tmp_file, "Brian was here. Briefly.")?;
-//!
-//!     // By closing the `TempDir` explicitly, we can check that it has
-//!     // been deleted successfully. If we don't close it explicitly,
-//!     // the directory will still be deleted when `tmp_dir` goes out
-//!     // of scope, but we won't know whether deleting the directory
-//!     // succeeded.
-//!     drop(tmp_file);
-//!     tmp_dir.close()?;
-//!     Ok(())
-//! }
-//! ```
-
-extern crate rand;
-extern crate remove_dir_all;
-
-use std::env;
-use std::io::{self, Error, ErrorKind};
-use std::fmt;
-use std::fs;
-use std::path::{self, PathBuf, Path};
-use rand::{thread_rng, Rng};
-use remove_dir_all::remove_dir_all;
-
-/// A directory in the filesystem that is automatically deleted when
-/// it goes out of scope.
-///
-/// The [`TempDir`] type creates a directory on the file system that
-/// is deleted once it goes out of scope. At construction, the
-/// `TempDir` creates a new directory with a randomly generated name,
-/// and with a prefix of your choosing.
-///
-/// The default constructor, [`TempDir::new`], creates directories in
-/// the location returned by [`std::env::temp_dir()`], but `TempDir`
-/// can be configured to manage a temporary directory in any location
-/// by constructing with [`TempDir::new_in`].
-///
-/// After creating a `TempDir`, work with the file system by doing
-/// standard [`std::fs`] file system operations on its [`Path`],
-/// which can be retrieved with [`TempDir::path`]. Once the `TempDir`
-/// value is dropped, the directory at the path will be deleted, along
-/// with any files and directories it contains. It is your responsibility
-/// to ensure that no further file system operations are attempted
-/// inside the temporary directory once it has been deleted.
-///
-/// Various platform-specific conditions may cause `TempDir` to fail
-/// to delete the underlying directory. It's important to ensure that
-/// handles (like [`File`] and [`ReadDir`]) to files inside the
-/// directory are dropped before the `TempDir` goes out of scope. The
-/// `TempDir` destructor will silently ignore any errors in deleting
-/// the directory; to instead handle errors call [`TempDir::close`].
-///
-/// Note that if the program exits before the `TempDir` destructor is
-/// run, such as via [`std::process::exit`], by segfaulting, or by
-/// receiving a signal like `SIGINT`, then the temporary directory
-/// will not be deleted.
-/// 
-/// [`File`]: http://doc.rust-lang.org/std/fs/struct.File.html
-/// [`Path`]: http://doc.rust-lang.org/std/path/struct.Path.html
-/// [`ReadDir`]: http://doc.rust-lang.org/std/fs/struct.ReadDir.html
-/// [`TempDir::close`]: struct.TempDir.html#method.close
-/// [`TempDir::new`]: struct.TempDir.html#method.new
-/// [`TempDir::new_in`]: struct.TempDir.html#method.new_in
-/// [`TempDir::path`]: struct.TempDir.html#method.path
-/// [`TempDir`]: struct.TempDir.html
-/// [`std::env::temp_dir()`]: https://doc.rust-lang.org/std/env/fn.temp_dir.html
-/// [`std::fs`]: http://doc.rust-lang.org/std/fs/index.html
-/// [`std::process::exit`]: http://doc.rust-lang.org/std/process/fn.exit.html
-pub struct TempDir {
-    path: Option<PathBuf>,
-}
-
-// How many times should we (re)try finding an unused random name? It should be
-// enough that an attacker will run out of luck before we run out of patience.
-const NUM_RETRIES: u32 = 1 << 31;
-// How many characters should we include in a random file name? It needs to
-// be enough to dissuade an attacker from trying to preemptively create names
-// of that length, but not so huge that we unnecessarily drain the random number
-// generator of entropy.
-const NUM_RAND_CHARS: usize = 12;
-
-impl TempDir {
-    /// Attempts to make a temporary directory inside of `env::temp_dir()` whose
-    /// name will have the prefix, `prefix`. The directory and
-    /// everything inside it will be automatically deleted once the
-    /// returned `TempDir` is destroyed.
-    ///
-    /// # Errors
-    ///
-    /// If the directory can not be created, `Err` is returned.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::fs::File;
-    /// use std::io::Write;
-    /// use tempdir::TempDir;
-    ///
-    /// # use std::io;
-    /// # fn run() -> Result<(), io::Error> {
-    /// // Create a directory inside of `std::env::temp_dir()`, named with
-    /// // the prefix, "example".
-    /// let tmp_dir = TempDir::new("example")?;
-    /// let file_path = tmp_dir.path().join("my-temporary-note.txt");
-    /// let mut tmp_file = File::create(file_path)?;
-    /// writeln!(tmp_file, "Brian was here. Briefly.")?;
-    ///
-    /// // `tmp_dir` goes out of scope, the directory as well as
-    /// // `tmp_file` will be deleted here.
-    /// # Ok(())
-    /// # }
-    /// ```
-    pub fn new(prefix: &str) -> io::Result<TempDir> {
-        TempDir::new_in(&env::temp_dir(), prefix)
-    }
-
-    /// Attempts to make a temporary directory inside of `tmpdir`
-    /// whose name will have the prefix `prefix`. The directory and
-    /// everything inside it will be automatically deleted once the
-    /// returned `TempDir` is destroyed.
-    ///
-    /// # Errors
-    ///
-    /// If the directory can not be created, `Err` is returned.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::fs::{self, File};
-    /// use std::io::Write;
-    /// use tempdir::TempDir;
-    ///
-    /// # use std::io;
-    /// # fn run() -> Result<(), io::Error> {
-    /// // Create a directory inside of the current directory, named with
-    /// // the prefix, "example".
-    /// let tmp_dir = TempDir::new_in(".", "example")?;
-    /// let file_path = tmp_dir.path().join("my-temporary-note.txt");
-    /// let mut tmp_file = File::create(file_path)?;
-    /// writeln!(tmp_file, "Brian was here. Briefly.")?;
-    /// # Ok(())
-    /// # }
-    /// ```
-    pub fn new_in<P: AsRef<Path>>(tmpdir: P, prefix: &str) -> io::Result<TempDir> {
-        let storage;
-        let mut tmpdir = tmpdir.as_ref();
-        if !tmpdir.is_absolute() {
-            let cur_dir = env::current_dir()?;
-            storage = cur_dir.join(tmpdir);
-            tmpdir = &storage;
-            // return TempDir::new_in(&cur_dir.join(tmpdir), prefix);
-        }
-
-        let mut rng = thread_rng();
-        for _ in 0..NUM_RETRIES {
-            let suffix: String = rng.gen_ascii_chars().take(NUM_RAND_CHARS).collect();
-            let leaf = if !prefix.is_empty() {
-                format!("{}.{}", prefix, suffix)
-            } else {
-                // If we're given an empty string for a prefix, then creating a
-                // directory starting with "." would lead to it being
-                // semi-invisible on some systems.
-                suffix
-            };
-            let path = tmpdir.join(&leaf);
-            match fs::create_dir(&path) {
-                Ok(_) => return Ok(TempDir { path: Some(path) }),
-                Err(ref e) if e.kind() == ErrorKind::AlreadyExists => {}
-                Err(e) => return Err(e),
-            }
-        }
-
-        Err(Error::new(ErrorKind::AlreadyExists,
-                       "too many temporary directories already exist"))
-    }
-
-    /// Accesses the [`Path`] to the temporary directory.
-    ///
-    /// [`Path`]: http://doc.rust-lang.org/std/path/struct.Path.html
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use tempdir::TempDir;
-    ///
-    /// # use std::io;
-    /// # fn run() -> Result<(), io::Error> {
-    /// let tmp_path;
-    ///
-    /// {
-    ///    let tmp_dir = TempDir::new("example")?;
-    ///    tmp_path = tmp_dir.path().to_owned();
-    ///
-    ///    // Check that the temp directory actually exists.
-    ///    assert!(tmp_path.exists());
-    ///
-    ///    // End of `tmp_dir` scope, directory will be deleted
-    /// }
-    ///
-    /// // Temp directory should be deleted by now
-    /// assert_eq!(tmp_path.exists(), false);
-    /// # Ok(())
-    /// # }
-    /// ```
-    pub fn path(&self) -> &path::Path {
-        self.path.as_ref().unwrap()
-    }
-
-    /// Unwraps the [`Path`] contained in the `TempDir` and
-    /// returns it. This destroys the `TempDir` without deleting the
-    /// directory represented by the returned `Path`.
-    ///
-    /// [`Path`]: http://doc.rust-lang.org/std/path/struct.Path.html
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::fs;
-    /// use tempdir::TempDir;
-    ///
-    /// # use std::io;
-    /// # fn run() -> Result<(), io::Error> {
-    /// let tmp_dir = TempDir::new("example")?;
-    ///
-    /// // Convert `tmp_dir` into a `Path`, destroying the `TempDir`
-    /// // without deleting the directory.
-    /// let tmp_path = tmp_dir.into_path();
-    ///
-    /// // Delete the temporary directory ourselves.
-    /// fs::remove_dir_all(tmp_path)?;
-    /// # Ok(())
-    /// # }
-    /// ```
-    pub fn into_path(mut self) -> PathBuf {
-        self.path.take().unwrap()
-    }
-
-    /// Closes and removes the temporary directory, returing a `Result`.
-    ///
-    /// Although `TempDir` removes the directory on drop, in the destructor
-    /// any errors are ignored. To detect errors cleaning up the temporary
-    /// directory, call `close` instead.
-    ///
-    /// # Errors
-    ///
-    /// This function may return a variety of [`std::io::Error`]s that result from deleting
-    /// the files and directories contained with the temporary directory,
-    /// as well as from deleting the temporary directory itself. These errors
-    /// may be platform specific.
-    ///
-    /// [`std::io::Error`]: http://doc.rust-lang.org/std/io/struct.Error.html
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::fs::File;
-    /// use std::io::Write;
-    /// use tempdir::TempDir;
-    ///
-    /// # use std::io;
-    /// # fn run() -> Result<(), io::Error> {
-    /// // Create a directory inside of `std::env::temp_dir()`, named with
-    /// // the prefix, "example".
-    /// let tmp_dir = TempDir::new("example")?;
-    /// let file_path = tmp_dir.path().join("my-temporary-note.txt");
-    /// let mut tmp_file = File::create(file_path)?;
-    /// writeln!(tmp_file, "Brian was here. Briefly.")?;
-    ///
-    /// // By closing the `TempDir` explicitly we can check that it has
-    /// // been deleted successfully. If we don't close it explicitly,
-    /// // the directory will still be deleted when `tmp_dir` goes out
-    /// // of scope, but we won't know whether deleting the directory
-    /// // succeeded.
-    /// drop(tmp_file);
-    /// tmp_dir.close()?;
-    /// # Ok(())
-    /// # }
-    /// ```
-    pub fn close(mut self) -> io::Result<()> {
-        let result = remove_dir_all(self.path());
-
-        // Prevent the Drop impl from removing the dir a second time.
-        self.path = None;
-
-        result
-    }
-}
-
-impl AsRef<Path> for TempDir {
-    fn as_ref(&self) -> &Path {
-        self.path()
-    }
-}
-
-impl fmt::Debug for TempDir {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        f.debug_struct("TempDir")
-            .field("path", &self.path())
-            .finish()
-    }
-}
-
-impl Drop for TempDir {
-    fn drop(&mut self) {
-        // Path is `None` if `close()` or `into_path()` has been called.
-        if let Some(ref p) = self.path {
-            let _ =  remove_dir_all(p);
-        }
-    }
-}
-
-// the tests for this module need to change the path using change_dir,
-// and this doesn't play nicely with other tests so these unit tests are located
-// in src/test/run-pass/tempfile.rs