Reformat `use` declarations.

The previous commit updated `rustfmt.toml` appropriately. This commit is
the outcome of running `x fmt --all` with the new formatting options.

12 files changed, 23 insertions, 32 deletions

diff --git a/library/alloc/src/vec/cow.rs b/library/alloc/src/vec/cow.rs
index 3fe83242a30..c18091705a6 100644
--- a/library/alloc/src/vec/cow.rs
+++ b/library/alloc/src/vec/cow.rs
@@ -1,6 +1,5 @@
-use crate::borrow::Cow;
-
 use super::Vec;
+use crate::borrow::Cow;
 
 #[stable(feature = "cow_from_vec", since = "1.8.0")]
 impl<'a, T: Clone> From<&'a [T]> for Cow<'a, [T]> {
diff --git a/library/alloc/src/vec/drain.rs b/library/alloc/src/vec/drain.rs
index f0b63759ac7..9362cef2a1b 100644
--- a/library/alloc/src/vec/drain.rs
+++ b/library/alloc/src/vec/drain.rs
@@ -1,4 +1,3 @@
-use crate::alloc::{Allocator, Global};
 use core::fmt;
 use core::iter::{FusedIterator, TrustedLen};
 use core::mem::{self, ManuallyDrop, SizedTypeProperties};
@@ -6,6 +5,7 @@ use core::ptr::{self, NonNull};
 use core::slice::{self};
 
 use super::Vec;
+use crate::alloc::{Allocator, Global};
 
 /// A draining iterator for `Vec<T>`.
 ///
diff --git a/library/alloc/src/vec/extract_if.rs b/library/alloc/src/vec/extract_if.rs
index 118cfdb36b9..72d51e89044 100644
--- a/library/alloc/src/vec/extract_if.rs
+++ b/library/alloc/src/vec/extract_if.rs
@@ -1,8 +1,7 @@
-use crate::alloc::{Allocator, Global};
-use core::ptr;
-use core::slice;
+use core::{ptr, slice};
 
 use super::Vec;
+use crate::alloc::{Allocator, Global};
 
 /// An iterator which uses a closure to determine if an element should be removed.
 ///
diff --git a/library/alloc/src/vec/in_place_collect.rs b/library/alloc/src/vec/in_place_collect.rs
index 0dc193d82c5..d119e6ca397 100644
--- a/library/alloc/src/vec/in_place_collect.rs
+++ b/library/alloc/src/vec/in_place_collect.rs
@@ -155,9 +155,7 @@
 //! vec.truncate(write_idx);
 //! ```
 
-use crate::alloc::{handle_alloc_error, Global};
-use core::alloc::Allocator;
-use core::alloc::Layout;
+use core::alloc::{Allocator, Layout};
 use core::iter::{InPlaceIterable, SourceIter, TrustedRandomAccessNoCoerce};
 use core::marker::PhantomData;
 use core::mem::{self, ManuallyDrop, SizedTypeProperties};
@@ -165,6 +163,7 @@ use core::num::NonZero;
 use core::ptr;
 
 use super::{InPlaceDrop, InPlaceDstDataSrcBufDrop, SpecFromIter, SpecFromIterNested, Vec};
+use crate::alloc::{handle_alloc_error, Global};
 
 const fn in_place_collectible<DEST, SRC>(
     step_merge: Option<NonZero<usize>>,
diff --git a/library/alloc/src/vec/in_place_drop.rs b/library/alloc/src/vec/in_place_drop.rs
index 4050c250130..27f75979310 100644
--- a/library/alloc/src/vec/in_place_drop.rs
+++ b/library/alloc/src/vec/in_place_drop.rs
@@ -1,6 +1,5 @@
 use core::marker::PhantomData;
-use core::ptr::NonNull;
-use core::ptr::{self, drop_in_place};
+use core::ptr::{self, drop_in_place, NonNull};
 use core::slice::{self};
 
 use crate::alloc::Global;
diff --git a/library/alloc/src/vec/into_iter.rs b/library/alloc/src/vec/into_iter.rs
index c3a8660383d..fad8abad493 100644
--- a/library/alloc/src/vec/into_iter.rs
+++ b/library/alloc/src/vec/into_iter.rs
@@ -1,11 +1,3 @@
-#[cfg(not(no_global_oom_handling))]
-use super::AsVecIntoIter;
-use crate::alloc::{Allocator, Global};
-#[cfg(not(no_global_oom_handling))]
-use crate::collections::VecDeque;
-use crate::raw_vec::RawVec;
-use core::array;
-use core::fmt;
 use core::iter::{
     FusedIterator, InPlaceIterable, SourceIter, TrustedFused, TrustedLen,
     TrustedRandomAccessNoCoerce,
@@ -17,6 +9,14 @@ use core::num::NonZero;
 use core::ops::Deref;
 use core::ptr::{self, NonNull};
 use core::slice::{self};
+use core::{array, fmt};
+
+#[cfg(not(no_global_oom_handling))]
+use super::AsVecIntoIter;
+use crate::alloc::{Allocator, Global};
+#[cfg(not(no_global_oom_handling))]
+use crate::collections::VecDeque;
+use crate::raw_vec::RawVec;
 
 macro non_null {
     (mut $place:expr, $t:ident) => {{
diff --git a/library/alloc/src/vec/mod.rs b/library/alloc/src/vec/mod.rs
index db81fc05c34..5306c507487 100644
--- a/library/alloc/src/vec/mod.rs
+++ b/library/alloc/src/vec/mod.rs
@@ -66,15 +66,14 @@ use core::ops::{self, Index, IndexMut, Range, RangeBounds};
 use core::ptr::{self, NonNull};
 use core::slice::{self, SliceIndex};
 
+#[unstable(feature = "extract_if", reason = "recently added", issue = "43244")]
+pub use self::extract_if::ExtractIf;
 use crate::alloc::{Allocator, Global};
 use crate::borrow::{Cow, ToOwned};
 use crate::boxed::Box;
 use crate::collections::TryReserveError;
 use crate::raw_vec::RawVec;
 
-#[unstable(feature = "extract_if", reason = "recently added", issue = "43244")]
-pub use self::extract_if::ExtractIf;
-
 mod extract_if;
 
 #[cfg(not(no_global_oom_handling))]
diff --git a/library/alloc/src/vec/partial_eq.rs b/library/alloc/src/vec/partial_eq.rs
index b0cf72577a1..5e620c4b2ef 100644
--- a/library/alloc/src/vec/partial_eq.rs
+++ b/library/alloc/src/vec/partial_eq.rs
@@ -1,9 +1,8 @@
+use super::Vec;
 use crate::alloc::Allocator;
 #[cfg(not(no_global_oom_handling))]
 use crate::borrow::Cow;
 
-use super::Vec;
-
 macro_rules! __impl_slice_eq1 {
     ([$($vars:tt)*] $lhs:ty, $rhs:ty $(where $ty:ty: $bound:ident)?, #[$stability:meta]) => {
         #[$stability]
diff --git a/library/alloc/src/vec/spec_extend.rs b/library/alloc/src/vec/spec_extend.rs
index e2f865d0f71..7085bceef5b 100644
--- a/library/alloc/src/vec/spec_extend.rs
+++ b/library/alloc/src/vec/spec_extend.rs
@@ -1,8 +1,8 @@
-use crate::alloc::Allocator;
 use core::iter::TrustedLen;
 use core::slice::{self};
 
 use super::{IntoIter, Vec};
+use crate::alloc::Allocator;
 
 // Specialization trait used for Vec::extend
 pub(super) trait SpecExtend<T, I> {
diff --git a/library/alloc/src/vec/spec_from_elem.rs b/library/alloc/src/vec/spec_from_elem.rs
index 01a6db14474..96d701e15d4 100644
--- a/library/alloc/src/vec/spec_from_elem.rs
+++ b/library/alloc/src/vec/spec_from_elem.rs
@@ -1,10 +1,9 @@
 use core::ptr;
 
+use super::{IsZero, Vec};
 use crate::alloc::Allocator;
 use crate::raw_vec::RawVec;
 
-use super::{IsZero, Vec};
-
 // Specialization trait used for Vec::from_elem
 pub(super) trait SpecFromElem: Sized {
     fn from_elem<A: Allocator>(elem: Self, n: usize, alloc: A) -> Vec<Self, A>;
diff --git a/library/alloc/src/vec/spec_from_iter_nested.rs b/library/alloc/src/vec/spec_from_iter_nested.rs
index f915ebb86e5..77f7761d22f 100644
--- a/library/alloc/src/vec/spec_from_iter_nested.rs
+++ b/library/alloc/src/vec/spec_from_iter_nested.rs
@@ -1,10 +1,8 @@
-use core::cmp;
 use core::iter::TrustedLen;
-use core::ptr;
-
-use crate::raw_vec::RawVec;
+use core::{cmp, ptr};
 
 use super::{SpecExtend, Vec};
+use crate::raw_vec::RawVec;
 
 /// Another specialization trait for Vec::from_iter
 /// necessary to manually prioritize overlapping specializations
diff --git a/library/alloc/src/vec/splice.rs b/library/alloc/src/vec/splice.rs
index 852fdcc3f5c..9e36377c148 100644
--- a/library/alloc/src/vec/splice.rs
+++ b/library/alloc/src/vec/splice.rs
@@ -1,8 +1,8 @@
-use crate::alloc::{Allocator, Global};
 use core::ptr::{self};
 use core::slice::{self};
 
 use super::{Drain, Vec};
+use crate::alloc::{Allocator, Global};
 
 /// A splicing iterator for `Vec`.
 ///