Merging upstream version 1.71.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

8 files changed, 321 insertions, 137 deletions

diff --git a/vendor/tempfile/src/dir.rs b/vendor/tempfile/src/dir.rs
index d5a944b6f..917e47ec2 100644
--- a/vendor/tempfile/src/dir.rs
+++ b/vendor/tempfile/src/dir.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use remove_dir_all::remove_dir_all;
+use std::fs::remove_dir_all;
 use std::mem;
 use std::path::{self, Path, PathBuf};
 use std::{fmt, fs, io};
@@ -65,9 +65,9 @@ pub fn tempdir() -> io::Result<TempDir> {
     TempDir::new()
 }
 
-/// Create a new temporary directory.
+/// Create a new temporary directory in a specific directory.
 ///
-/// The `tempdir` function creates a directory in the file system
+/// The `tempdir_in` function creates a directory in the specified directory
 /// and returns a [`TempDir`].
 /// The directory will be automatically deleted when the `TempDir`s
 /// destructor is run.
@@ -83,7 +83,7 @@ pub fn tempdir() -> io::Result<TempDir> {
 /// # Examples
 ///
 /// ```
-/// use tempfile::tempdir;
+/// use tempfile::tempdir_in;
 /// use std::fs::File;
 /// use std::io::{self, Write};
 ///
@@ -93,8 +93,8 @@ pub fn tempdir() -> io::Result<TempDir> {
 /// #     }
 /// # }
 /// # fn run() -> Result<(), io::Error> {
-/// // Create a directory inside of `std::env::temp_dir()`,
-/// let dir = tempdir()?;
+/// // Create a directory inside of the current directory.
+/// let dir = tempdir_in(".")?;
 ///
 /// let file_path = dir.path().join("my-temporary-note.txt");
 /// let mut file = File::create(file_path)?;
@@ -292,6 +292,7 @@ impl TempDir {
     /// # Ok(())
     /// # }
     /// ```
+    #[must_use]
     pub fn path(&self) -> &path::Path {
         self.path.as_ref()
     }
@@ -323,6 +324,7 @@ impl TempDir {
     /// # Ok(())
     /// # }
     /// ```
+    #[must_use]
     pub fn into_path(self) -> PathBuf {
         // Prevent the Drop impl from being called.
         let mut this = mem::ManuallyDrop::new(self);
diff --git a/vendor/tempfile/src/file/imp/other.rs b/vendor/tempfile/src/file/imp/other.rs
index d8a55a745..8721d2da6 100644
--- a/vendor/tempfile/src/file/imp/other.rs
+++ b/vendor/tempfile/src/file/imp/other.rs
@@ -9,7 +9,7 @@ fn not_supported<T>() -> io::Result<T> {
     ))
 }
 
-pub fn create_named(_path: &Path, open_options: &mut OpenOptions) -> io::Result<File> {
+pub fn create_named(_path: &Path, _open_options: &mut OpenOptions) -> io::Result<File> {
     not_supported()
 }
 
@@ -25,6 +25,6 @@ pub fn persist(_old_path: &Path, _new_path: &Path, _overwrite: bool) -> io::Resu
     not_supported()
 }
 
-pub fn keep(path: &Path) -> io::Result<()> {
+pub fn keep(_path: &Path) -> io::Result<()> {
     not_supported()
 }
diff --git a/vendor/tempfile/src/file/imp/unix.rs b/vendor/tempfile/src/file/imp/unix.rs
index 480743cf7..c305ea95e 100644
--- a/vendor/tempfile/src/file/imp/unix.rs
+++ b/vendor/tempfile/src/file/imp/unix.rs
@@ -1,13 +1,11 @@
 use std::env;
-use std::ffi::{CString, OsStr};
+use std::ffi::OsStr;
 use std::fs::{self, File, OpenOptions};
 use std::io;
 cfg_if::cfg_if! {
     if #[cfg(not(target_os = "wasi"))] {
-        use std::os::unix::ffi::OsStrExt;
         use std::os::unix::fs::{MetadataExt, OpenOptionsExt};
     } else {
-        use std::os::wasi::ffi::OsStrExt;
         #[cfg(feature = "nightly")]
         use std::os::wasi::fs::MetadataExt;
     }
@@ -16,29 +14,7 @@ use crate::util;
 use std::path::Path;
 
 #[cfg(not(target_os = "redox"))]
-use libc::{c_char, c_int, link, rename, unlink};
-
-#[cfg(not(target_os = "redox"))]
-#[inline(always)]
-pub fn cvt_err(result: c_int) -> io::Result<c_int> {
-    if result == -1 {
-        Err(io::Error::last_os_error())
-    } else {
-        Ok(result)
-    }
-}
-
-#[cfg(target_os = "redox")]
-#[inline(always)]
-pub fn cvt_err(result: Result<usize, syscall::Error>) -> io::Result<usize> {
-    result.map_err(|err| io::Error::from_raw_os_error(err.errno))
-}
-
-// Stolen from std.
-pub fn cstr(path: &Path) -> io::Result<CString> {
-    CString::new(path.as_os_str().as_bytes())
-        .map_err(|_| io::Error::new(io::ErrorKind::InvalidInput, "path contained a null"))
-}
+use rustix::fs::{cwd, linkat, renameat, unlinkat, AtFlags};
 
 pub fn create_named(path: &Path, open_options: &mut OpenOptions) -> io::Result<File> {
     open_options.read(true).write(true).create_new(true);
@@ -70,16 +46,18 @@ fn create_unlinked(path: &Path) -> io::Result<File> {
 
 #[cfg(target_os = "linux")]
 pub fn create(dir: &Path) -> io::Result<File> {
-    use libc::{EISDIR, ENOENT, EOPNOTSUPP, O_TMPFILE};
+    use rustix::{fs::OFlags, io::Errno};
     OpenOptions::new()
         .read(true)
         .write(true)
-        .custom_flags(O_TMPFILE) // do not mix with `create_new(true)`
+        .custom_flags(OFlags::TMPFILE.bits() as i32) // do not mix with `create_new(true)`
         .open(dir)
         .or_else(|e| {
-            match e.raw_os_error() {
+            match Errno::from_io_error(&e) {
                 // These are the three "not supported" error codes for O_TMPFILE.
-                Some(EOPNOTSUPP) | Some(EISDIR) | Some(ENOENT) => create_unix(dir),
+                Some(Errno::OPNOTSUPP) | Some(Errno::ISDIR) | Some(Errno::NOENT) => {
+                    create_unix(dir)
+                }
                 _ => Err(e),
             }
         })
@@ -124,29 +102,40 @@ pub fn reopen(_file: &File, _path: &Path) -> io::Result<File> {
 
 #[cfg(not(target_os = "redox"))]
 pub fn persist(old_path: &Path, new_path: &Path, overwrite: bool) -> io::Result<()> {
-    unsafe {
-        let old_path = cstr(old_path)?;
-        let new_path = cstr(new_path)?;
-        if overwrite {
-            cvt_err(rename(
-                old_path.as_ptr() as *const c_char,
-                new_path.as_ptr() as *const c_char,
-            ))?;
-        } else {
-            cvt_err(link(
-                old_path.as_ptr() as *const c_char,
-                new_path.as_ptr() as *const c_char,
-            ))?;
-            // Ignore unlink errors. Can we do better?
-            // On recent linux, we can use renameat2 to do this atomically.
-            let _ = unlink(old_path.as_ptr() as *const c_char);
+    if overwrite {
+        renameat(cwd(), old_path, cwd(), new_path)?;
+    } else {
+        // On Linux, use `renameat_with` to avoid overwriting an existing name,
+        // if the kernel and the filesystem support it.
+        #[cfg(any(target_os = "android", target_os = "linux"))]
+        {
+            use rustix::fs::{renameat_with, RenameFlags};
+            use rustix::io::Errno;
+            use std::sync::atomic::{AtomicBool, Ordering::Relaxed};
+
+            static NOSYS: AtomicBool = AtomicBool::new(false);
+            if !NOSYS.load(Relaxed) {
+                match renameat_with(cwd(), old_path, cwd(), new_path, RenameFlags::NOREPLACE) {
+                    Ok(()) => return Ok(()),
+                    Err(Errno::NOSYS) => NOSYS.store(true, Relaxed),
+                    Err(Errno::INVAL) => {}
+                    Err(e) => return Err(e.into()),
+                }
+            }
         }
-        Ok(())
+
+        // Otherwise use `linkat` to create the new filesystem name, which
+        // will fail if the name already exists, and then `unlinkat` to remove
+        // the old name.
+        linkat(cwd(), old_path, cwd(), new_path, AtFlags::empty())?;
+        // Ignore unlink errors. Can we do better?
+        let _ = unlinkat(cwd(), old_path, AtFlags::empty());
     }
+    Ok(())
 }
 
 #[cfg(target_os = "redox")]
-pub fn persist(old_path: &Path, new_path: &Path, overwrite: bool) -> io::Result<()> {
+pub fn persist(_old_path: &Path, _new_path: &Path, _overwrite: bool) -> io::Result<()> {
     // XXX implement when possible
     Err(io::Error::from_raw_os_error(syscall::ENOSYS))
 }
diff --git a/vendor/tempfile/src/file/imp/windows.rs b/vendor/tempfile/src/file/imp/windows.rs
index 71b474880..cb2673b5a 100644
--- a/vendor/tempfile/src/file/imp/windows.rs
+++ b/vendor/tempfile/src/file/imp/windows.rs
@@ -6,13 +6,12 @@ use std::os::windows::io::{AsRawHandle, FromRawHandle, RawHandle};
 use std::path::Path;
 use std::{io, iter};
 
-use winapi::um::fileapi::SetFileAttributesW;
-use winapi::um::handleapi::INVALID_HANDLE_VALUE;
-use winapi::um::winbase::{MoveFileExW, ReOpenFile};
-use winapi::um::winbase::{FILE_FLAG_DELETE_ON_CLOSE, MOVEFILE_REPLACE_EXISTING};
-use winapi::um::winnt::{FILE_ATTRIBUTE_NORMAL, FILE_ATTRIBUTE_TEMPORARY};
-use winapi::um::winnt::{FILE_GENERIC_READ, FILE_GENERIC_WRITE, HANDLE};
-use winapi::um::winnt::{FILE_SHARE_DELETE, FILE_SHARE_READ, FILE_SHARE_WRITE};
+use windows_sys::Win32::Foundation::{HANDLE, INVALID_HANDLE_VALUE};
+use windows_sys::Win32::Storage::FileSystem::{
+    MoveFileExW, ReOpenFile, SetFileAttributesW, FILE_ATTRIBUTE_NORMAL, FILE_ATTRIBUTE_TEMPORARY,
+    FILE_FLAG_DELETE_ON_CLOSE, FILE_GENERIC_READ, FILE_GENERIC_WRITE, FILE_SHARE_DELETE,
+    FILE_SHARE_READ, FILE_SHARE_WRITE, MOVEFILE_REPLACE_EXISTING,
+};
 
 use crate::util;
 
diff --git a/vendor/tempfile/src/file/mod.rs b/vendor/tempfile/src/file/mod.rs
index b859ced79..023acd26a 100644
--- a/vendor/tempfile/src/file/mod.rs
+++ b/vendor/tempfile/src/file/mod.rs
@@ -52,7 +52,7 @@ mod imp;
 ///
 /// [`std::env::temp_dir()`]: https://doc.rust-lang.org/std/env/fn.temp_dir.html
 pub fn tempfile() -> io::Result<File> {
-    tempfile_in(&env::temp_dir())
+    tempfile_in(env::temp_dir())
 }
 
 /// Create a new temporary file in the specified directory.
@@ -467,29 +467,31 @@ impl AsRef<OsStr> for TempPath {
 /// # Resource Leaking
 ///
 /// If the program exits before the `NamedTempFile` destructor is
-/// run, such as via [`std::process::exit()`], by segfaulting, or by
-/// receiving a signal like `SIGINT`, then the temporary file
-/// will not be deleted.
+/// run, the temporary file will not be deleted. This can happen
+/// if the process exits using [`std::process::exit()`], a segfault occurs,
+/// receiving an interrupt signal like `SIGINT` that is not handled, or by using
+/// a statically declared `NamedTempFile` instance (like with [`lazy_static`]).
 ///
-/// Use the [`tempfile()`] function unless you absolutely need a named file.
+/// Use the [`tempfile()`] function unless you need a named file path.
 ///
 /// [`tempfile()`]: fn.tempfile.html
 /// [`NamedTempFile::new()`]: #method.new
 /// [`NamedTempFile::new_in()`]: #method.new_in
 /// [`std::env::temp_dir()`]: https://doc.rust-lang.org/std/env/fn.temp_dir.html
 /// [`std::process::exit()`]: http://doc.rust-lang.org/std/process/fn.exit.html
-pub struct NamedTempFile {
+/// [`lazy_static`]: https://github.com/rust-lang-nursery/lazy-static.rs/issues/62
+pub struct NamedTempFile<F = File> {
     path: TempPath,
-    file: File,
+    file: F,
 }
 
-impl fmt::Debug for NamedTempFile {
+impl<F> fmt::Debug for NamedTempFile<F> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         write!(f, "NamedTempFile({:?})", self.path)
     }
 }
 
-impl AsRef<Path> for NamedTempFile {
+impl<F> AsRef<Path> for NamedTempFile<F> {
     #[inline]
     fn as_ref(&self) -> &Path {
         self.path()
@@ -497,41 +499,46 @@ impl AsRef<Path> for NamedTempFile {
 }
 
 /// Error returned when persisting a temporary file fails.
-#[derive(Debug)]
-pub struct PersistError {
+pub struct PersistError<F = File> {
     /// The underlying IO error.
     pub error: io::Error,
     /// The temporary file that couldn't be persisted.
-    pub file: NamedTempFile,
+    pub file: NamedTempFile<F>,
+}
+
+impl<F> fmt::Debug for PersistError<F> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "PersistError({:?})", self.error)
+    }
 }
 
-impl From<PersistError> for io::Error {
+impl<F> From<PersistError<F>> for io::Error {
     #[inline]
-    fn from(error: PersistError) -> io::Error {
+    fn from(error: PersistError<F>) -> io::Error {
         error.error
     }
 }
 
-impl From<PersistError> for NamedTempFile {
+impl<F> From<PersistError<F>> for NamedTempFile<F> {
     #[inline]
-    fn from(error: PersistError) -> NamedTempFile {
+    fn from(error: PersistError<F>) -> NamedTempFile<F> {
         error.file
     }
 }
 
-impl fmt::Display for PersistError {
+impl<F> fmt::Display for PersistError<F> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         write!(f, "failed to persist temporary file: {}", self.error)
     }
 }
 
-impl error::Error for PersistError {
+impl<F> error::Error for PersistError<F> {
     fn source(&self) -> Option<&(dyn error::Error + 'static)> {
         Some(&self.error)
     }
 }
 
-impl NamedTempFile {
+impl NamedTempFile<File> {
     /// Create a new named temporary file.
     ///
     /// See [`Builder`] for more configuration.
@@ -601,7 +608,9 @@ impl NamedTempFile {
     pub fn new_in<P: AsRef<Path>>(dir: P) -> io::Result<NamedTempFile> {
         Builder::new().tempfile_in(dir)
     }
+}
 
+impl<F> NamedTempFile<F> {
     /// Get the temporary file's path.
     ///
     /// # Security
@@ -711,7 +720,7 @@ impl NamedTempFile {
     /// ```
     ///
     /// [`PersistError`]: struct.PersistError.html
-    pub fn persist<P: AsRef<Path>>(self, new_path: P) -> Result<File, PersistError> {
+    pub fn persist<P: AsRef<Path>>(self, new_path: P) -> Result<F, PersistError<F>> {
         let NamedTempFile { path, file } = self;
         match path.persist(new_path) {
             Ok(_) => Ok(file),
@@ -764,7 +773,7 @@ impl NamedTempFile {
     /// # Ok(())
     /// # }
     /// ```
-    pub fn persist_noclobber<P: AsRef<Path>>(self, new_path: P) -> Result<File, PersistError> {
+    pub fn persist_noclobber<P: AsRef<Path>>(self, new_path: P) -> Result<F, PersistError<F>> {
         let NamedTempFile { path, file } = self;
         match path.persist_noclobber(new_path) {
             Ok(_) => Ok(file),
@@ -808,7 +817,7 @@ impl NamedTempFile {
     /// ```
     ///
     /// [`PathPersistError`]: struct.PathPersistError.html
-    pub fn keep(self) -> Result<(File, PathBuf), PersistError> {
+    pub fn keep(self) -> Result<(F, PathBuf), PersistError<F>> {
         let (file, path) = (self.file, self.path);
         match path.keep() {
             Ok(path) => Ok((file, path)),
@@ -819,6 +828,49 @@ impl NamedTempFile {
         }
     }
 
+    /// Get a reference to the underlying file.
+    pub fn as_file(&self) -> &F {
+        &self.file
+    }
+
+    /// Get a mutable reference to the underlying file.
+    pub fn as_file_mut(&mut self) -> &mut F {
+        &mut self.file
+    }
+
+    /// Convert the temporary file into a `std::fs::File`.
+    ///
+    /// The inner file will be deleted.
+    pub fn into_file(self) -> F {
+        self.file
+    }
+
+    /// Closes the file, leaving only the temporary file path.
+    ///
+    /// This is useful when another process must be able to open the temporary
+    /// file.
+    pub fn into_temp_path(self) -> TempPath {
+        self.path
+    }
+
+    /// Converts the named temporary file into its constituent parts.
+    ///
+    /// Note: When the path is dropped, the file is deleted but the file handle
+    /// is still usable.
+    pub fn into_parts(self) -> (F, TempPath) {
+        (self.file, self.path)
+    }
+
+    /// Creates a `NamedTempFile` from its constituent parts.
+    ///
+    /// This can be used with [`NamedTempFile::into_parts`] to reconstruct the
+    /// `NamedTempFile`.
+    pub fn from_parts(file: F, path: TempPath) -> Self {
+        Self { file, path }
+    }
+}
+
+impl NamedTempFile<File> {
     /// Securely reopen the temporary file.
     ///
     /// This function is useful when you need multiple independent handles to
@@ -858,54 +910,21 @@ impl NamedTempFile {
         imp::reopen(self.as_file(), NamedTempFile::path(self))
             .with_err_path(|| NamedTempFile::path(self))
     }
-
-    /// Get a reference to the underlying file.
-    pub fn as_file(&self) -> &File {
-        &self.file
-    }
-
-    /// Get a mutable reference to the underlying file.
-    pub fn as_file_mut(&mut self) -> &mut File {
-        &mut self.file
-    }
-
-    /// Convert the temporary file into a `std::fs::File`.
-    ///
-    /// The inner file will be deleted.
-    pub fn into_file(self) -> File {
-        self.file
-    }
-
-    /// Closes the file, leaving only the temporary file path.
-    ///
-    /// This is useful when another process must be able to open the temporary
-    /// file.
-    pub fn into_temp_path(self) -> TempPath {
-        self.path
-    }
-
-    /// Converts the named temporary file into its constituent parts.
-    ///
-    /// Note: When the path is dropped, the file is deleted but the file handle
-    /// is still usable.
-    pub fn into_parts(self) -> (File, TempPath) {
-        (self.file, self.path)
-    }
 }
 
-impl Read for NamedTempFile {
+impl<F: Read> Read for NamedTempFile<F> {
     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
         self.as_file_mut().read(buf).with_err_path(|| self.path())
     }
 }
 
-impl<'a> Read for &'a NamedTempFile {
+impl Read for &NamedTempFile<File> {
     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
         self.as_file().read(buf).with_err_path(|| self.path())
     }
 }
 
-impl Write for NamedTempFile {
+impl<F: Write> Write for NamedTempFile<F> {
     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
         self.as_file_mut().write(buf).with_err_path(|| self.path())
     }
@@ -915,7 +934,7 @@ impl Write for NamedTempFile {
     }
 }
 
-impl<'a> Write for &'a NamedTempFile {
+impl Write for &NamedTempFile<File> {
     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
         self.as_file().write(buf).with_err_path(|| self.path())
     }
@@ -925,20 +944,23 @@ impl<'a> Write for &'a NamedTempFile {
     }
 }
 
-impl Seek for NamedTempFile {
+impl<F: Seek> Seek for NamedTempFile<F> {
     fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
         self.as_file_mut().seek(pos).with_err_path(|| self.path())
     }
 }
 
-impl<'a> Seek for &'a NamedTempFile {
+impl Seek for &NamedTempFile<File> {
     fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
         self.as_file().seek(pos).with_err_path(|| self.path())
     }
 }
 
 #[cfg(unix)]
-impl std::os::unix::io::AsRawFd for NamedTempFile {
+impl<F> std::os::unix::io::AsRawFd for NamedTempFile<F>
+where
+    F: std::os::unix::io::AsRawFd,
+{
     #[inline]
     fn as_raw_fd(&self) -> std::os::unix::io::RawFd {
         self.as_file().as_raw_fd()
@@ -946,7 +968,10 @@ impl std::os::unix::io::AsRawFd for NamedTempFile {
 }
 
 #[cfg(windows)]
-impl std::os::windows::io::AsRawHandle for NamedTempFile {
+impl<F> std::os::windows::io::AsRawHandle for NamedTempFile<F>
+where
+    F: std::os::windows::io::AsRawHandle,
+{
     #[inline]
     fn as_raw_handle(&self) -> std::os::windows::io::RawHandle {
         self.as_file().as_raw_handle()
diff --git a/vendor/tempfile/src/lib.rs b/vendor/tempfile/src/lib.rs
index c38ca7b87..4b6371d49 100644
--- a/vendor/tempfile/src/lib.rs
+++ b/vendor/tempfile/src/lib.rs
@@ -14,9 +14,12 @@
 //!
 //! ## Resource Leaking
 //!
-//! `tempfile` will (almost) never fail to cleanup temporary resources, but `TempDir` and `NamedTempFile` will if
-//! their destructors don't run. This is because `tempfile` relies on the OS to cleanup the
-//! underlying file, while `TempDir` and `NamedTempFile` rely on their destructors to do so.
+//! `tempfile` will (almost) never fail to cleanup temporary resources. However `TempDir` and `NamedTempFile` will
+//! fail if their destructors don't run. This is because `tempfile` relies on the OS to cleanup the
+//! underlying file, while `TempDir` and `NamedTempFile` rely on rust destructors to do so.
+//! Destructors may fail to run if the process exits through an unhandled signal interrupt (like `SIGINT`),
+//! or if the instance is declared statically (like with [`lazy_static`]), among other possible
+//! reasons.
 //!
 //! ## Security
 //!
@@ -152,6 +155,7 @@
 //! [`TempDir`]: struct.TempDir.html
 //! [`NamedTempFile`]: struct.NamedTempFile.html
 //! [`std::env::temp_dir()`]: https://doc.rust-lang.org/std/env/fn.temp_dir.html
+//! [`lazy_static`]: https://github.com/rust-lang-nursery/lazy-static.rs/issues/62
 
 #![doc(
     html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -161,7 +165,7 @@
 #![cfg_attr(test, deny(warnings))]
 #![deny(rust_2018_idioms)]
 #![allow(clippy::redundant_field_names)]
-#![cfg_attr(feature = "nightly", feature(wasi_ext))]
+#![cfg_attr(all(feature = "nightly", target_os = "wasi"), feature(wasi_ext))]
 
 #[cfg(doctest)]
 doc_comment::doctest!("../README.md");
@@ -276,6 +280,15 @@ impl<'a, 'b> Builder<'a, 'b> {
     /// # Ok(())
     /// # }
     /// ```
+    ///
+    /// Create a temporary directory with a chosen prefix under a chosen folder:
+    ///
+    /// ```ignore
+    /// let dir = Builder::new()
+    ///     .prefix("my-temporary-dir")
+    ///     .tempdir_in("folder-with-tempdirs")?;
+    /// ```
+    #[must_use]
     pub fn new() -> Self {
         Self::default()
     }
@@ -419,7 +432,7 @@ impl<'a, 'b> Builder<'a, 'b> {
     /// [security]: struct.NamedTempFile.html#security
     /// [resource-leaking]: struct.NamedTempFile.html#resource-leaking
     pub fn tempfile(&self) -> io::Result<NamedTempFile> {
-        self.tempfile_in(&env::temp_dir())
+        self.tempfile_in(env::temp_dir())
     }
 
     /// Create the named temporary file in the specified directory.
@@ -493,7 +506,7 @@ impl<'a, 'b> Builder<'a, 'b> {
     ///
     /// [resource-leaking]: struct.TempDir.html#resource-leaking
     pub fn tempdir(&self) -> io::Result<TempDir> {
-        self.tempdir_in(&env::temp_dir())
+        self.tempdir_in(env::temp_dir())
     }
 
     /// Attempts to make a temporary directory inside of `dir`.
@@ -534,4 +547,155 @@ impl<'a, 'b> Builder<'a, 'b> {
 
         util::create_helper(dir, self.prefix, self.suffix, self.random_len, dir::create)
     }
+
+    /// Attempts to create a temporary file (or file-like object) using the
+    /// provided closure. The closure is passed a temporary file path and
+    /// returns an [`std::io::Result`]. The path provided to the closure will be
+    /// inside of [`std::env::temp_dir()`]. Use [`Builder::make_in`] to provide
+    /// a custom temporary directory. If the closure returns one of the
+    /// following errors, then another randomized file path is tried:
+    ///  - [`std::io::ErrorKind::AlreadyExists`]
+    ///  - [`std::io::ErrorKind::AddrInUse`]
+    ///
+    /// This can be helpful for taking full control over the file creation, but
+    /// leaving the temporary file path construction up to the library. This
+    /// also enables creating a temporary UNIX domain socket, since it is not
+    /// possible to bind to a socket that already exists.
+    ///
+    /// Note that [`Builder::append`] is ignored when using [`Builder::make`].
+    ///
+    /// # Security
+    ///
+    /// This has the same [security implications][security] as
+    /// [`NamedTempFile`], but with additional caveats. Specifically, it is up
+    /// to the closure to ensure that the file does not exist and that such a
+    /// check is *atomic*. Otherwise, a [time-of-check to time-of-use
+    /// bug][TOCTOU] could be introduced.
+    ///
+    /// For example, the following is **not** secure:
+    ///
+    /// ```
+    /// # use std::io;
+    /// # use std::fs::File;
+    /// # fn main() {
+    /// #     if let Err(_) = run() {
+    /// #         ::std::process::exit(1);
+    /// #     }
+    /// # }
+    /// # fn run() -> Result<(), io::Error> {
+    /// # use tempfile::Builder;
+    /// // This is NOT secure!
+    /// let tempfile = Builder::new().make(|path| {
+    ///     if path.is_file() {
+    ///         return Err(io::ErrorKind::AlreadyExists.into());
+    ///     }
+    ///
+    ///     // Between the check above and the usage below, an attacker could
+    ///     // have replaced `path` with another file, which would get truncated
+    ///     // by `File::create`.
+    ///
+    ///     File::create(path)
+    /// })?;
+    /// # Ok(())
+    /// # }
+    /// ```
+    /// Note that simply using [`std::fs::File::create`] alone is not correct
+    /// because it does not fail if the file already exists:
+    /// ```
+    /// # use std::io;
+    /// # use std::fs::File;
+    /// # fn main() {
+    /// #     if let Err(_) = run() {
+    /// #         ::std::process::exit(1);
+    /// #     }
+    /// # }
+    /// # fn run() -> Result<(), io::Error> {
+    /// # use tempfile::Builder;
+    /// // This could overwrite an existing file!
+    /// let tempfile = Builder::new().make(|path| File::create(path))?;
+    /// # Ok(())
+    /// # }
+    /// ```
+    /// For creating regular temporary files, use [`Builder::tempfile`] instead
+    /// to avoid these problems. This function is meant to enable more exotic
+    /// use-cases.
+    ///
+    /// # Resource leaking
+    ///
+    /// See [the resource leaking][resource-leaking] docs on `NamedTempFile`.
+    ///
+    /// # Errors
+    ///
+    /// If the closure returns any error besides
+    /// [`std::io::ErrorKind::AlreadyExists`] or
+    /// [`std::io::ErrorKind::AddrInUse`], then `Err` is returned.
+    ///
+    /// # Examples
+    /// ```
+    /// # use std::io;
+    /// # fn main() {
+    /// #     if let Err(_) = run() {
+    /// #         ::std::process::exit(1);
+    /// #     }
+    /// # }
+    /// # fn run() -> Result<(), io::Error> {
+    /// # use tempfile::Builder;
+    /// # #[cfg(unix)]
+    /// use std::os::unix::net::UnixListener;
+    /// # #[cfg(unix)]
+    /// let tempsock = Builder::new().make(|path| UnixListener::bind(path))?;
+    /// # Ok(())
+    /// # }
+    /// ```
+    ///
+    /// [TOCTOU]: https://en.wikipedia.org/wiki/Time-of-check_to_time-of-use
+    /// [security]: struct.NamedTempFile.html#security
+    /// [resource-leaking]: struct.NamedTempFile.html#resource-leaking
+    pub fn make<F, R>(&self, f: F) -> io::Result<NamedTempFile<R>>
+    where
+        F: FnMut(&Path) -> io::Result<R>,
+    {
+        self.make_in(env::temp_dir(), f)
+    }
+
+    /// This is the same as [`Builder::make`], except `dir` is used as the base
+    /// directory for the temporary file path.
+    ///
+    /// See [`Builder::make`] for more details and security implications.
+    ///
+    /// # Examples
+    /// ```
+    /// # use std::io;
+    /// # fn main() {
+    /// #     if let Err(_) = run() {
+    /// #         ::std::process::exit(1);
+    /// #     }
+    /// # }
+    /// # fn run() -> Result<(), io::Error> {
+    /// # use tempfile::Builder;
+    /// # #[cfg(unix)]
+    /// use std::os::unix::net::UnixListener;
+    /// # #[cfg(unix)]
+    /// let tempsock = Builder::new().make_in("./", |path| UnixListener::bind(path))?;
+    /// # Ok(())
+    /// # }
+    /// ```
+    pub fn make_in<F, R, P>(&self, dir: P, mut f: F) -> io::Result<NamedTempFile<R>>
+    where
+        F: FnMut(&Path) -> io::Result<R>,
+        P: AsRef<Path>,
+    {
+        util::create_helper(
+            dir.as_ref(),
+            self.prefix,
+            self.suffix,
+            self.random_len,
+            move |path| {
+                Ok(NamedTempFile::from_parts(
+                    f(&path)?,
+                    TempPath::from_path(path),
+                ))
+            },
+        )
+    }
 }
diff --git a/vendor/tempfile/src/spooled.rs b/vendor/tempfile/src/spooled.rs
index ed6c16fb4..db14967ca 100644
--- a/vendor/tempfile/src/spooled.rs
+++ b/vendor/tempfile/src/spooled.rs
@@ -64,14 +64,16 @@ pub fn spooled_tempfile(max_size: usize) -> SpooledTempFile {
 }
 
 impl SpooledTempFile {
+    #[must_use]
     pub fn new(max_size: usize) -> SpooledTempFile {
         SpooledTempFile {
-            max_size: max_size,
+            max_size,
             inner: SpooledData::InMemory(Cursor::new(Vec::new())),
         }
     }
 
     /// Returns true if the file has been rolled over to disk.
+    #[must_use]
     pub fn is_rolled(&self) -> bool {
         match self.inner {
             SpooledData::InMemory(_) => false,
@@ -107,6 +109,7 @@ impl SpooledTempFile {
     }
 
     /// Consumes and returns the inner `SpooledData` type.
+    #[must_use]
     pub fn into_inner(self) -> SpooledData {
         self.inner
     }
diff --git a/vendor/tempfile/src/util.rs b/vendor/tempfile/src/util.rs
index 8c91b9c69..c61082d50 100644
--- a/vendor/tempfile/src/util.rs
+++ b/vendor/tempfile/src/util.rs
@@ -1,4 +1,3 @@
-use fastrand;
 use std::ffi::{OsStr, OsString};
 use std::path::{Path, PathBuf};
 use std::{io, iter::repeat_with};
@@ -21,10 +20,10 @@ pub fn create_helper<F, R>(
     prefix: &OsStr,
     suffix: &OsStr,
     random_len: usize,
-    f: F,
+    mut f: F,
 ) -> io::Result<R>
 where
-    F: Fn(PathBuf) -> io::Result<R>,
+    F: FnMut(PathBuf) -> io::Result<R>,
 {
     let num_retries = if random_len != 0 {
         crate::NUM_RETRIES
@@ -35,7 +34,10 @@ where
     for _ in 0..num_retries {
         let path = base.join(tmpname(prefix, suffix, random_len));
         return match f(path) {
-            Err(ref e) if e.kind() == io::ErrorKind::AlreadyExists => continue,
+            Err(ref e) if e.kind() == io::ErrorKind::AlreadyExists && num_retries > 1 => continue,
+            // AddrInUse can happen if we're creating a UNIX domain socket and
+            // the path already exists.
+            Err(ref e) if e.kind() == io::ErrorKind::AddrInUse && num_retries > 1 => continue,
             res => res,
         };
     }