diff --git a/library/core/src/iter/adapters/chain.rs b/library/core/src/iter/adapters/chain.rs
index 86a005f3408..9753e1b43ba 100644
--- a/library/core/src/iter/adapters/chain.rs
+++ b/library/core/src/iter/adapters/chain.rs
@@ -1,8 +1,5 @@
-use crate::{
-    iter::{DoubleEndedIterator, FusedIterator, Iterator, TrustedLen},
-    ops::Try,
-    usize,
-};
+use crate::iter::{DoubleEndedIterator, FusedIterator, Iterator, TrustedLen};
+use crate::{ops::Try, usize};
 
 /// An iterator that links two iterators together, in a chain.
 ///
diff --git a/library/core/src/iter/adapters/cloned.rs b/library/core/src/iter/adapters/cloned.rs
index da523c83656..7da47dcd2d1 100644
--- a/library/core/src/iter/adapters/cloned.rs
+++ b/library/core/src/iter/adapters/cloned.rs
@@ -1,9 +1,6 @@
-use crate::{
-    iter::{
-        adapters::zip::try_get_unchecked, adapters::TrustedRandomAccess, FusedIterator, TrustedLen,
-    },
-    ops::Try,
-};
+use crate::iter::adapters::{zip::try_get_unchecked, TrustedRandomAccess};
+use crate::iter::{FusedIterator, TrustedLen};
+use crate::ops::Try;
 
 /// An iterator that clones the elements of an underlying iterator.
 ///
diff --git a/library/core/src/iter/adapters/copied.rs b/library/core/src/iter/adapters/copied.rs
index 98e231498c9..46f22354111 100644
--- a/library/core/src/iter/adapters/copied.rs
+++ b/library/core/src/iter/adapters/copied.rs
@@ -1,9 +1,6 @@
-use crate::{
-    iter::{
-        adapters::zip::try_get_unchecked, adapters::TrustedRandomAccess, FusedIterator, TrustedLen,
-    },
-    ops::Try,
-};
+use crate::iter::adapters::{zip::try_get_unchecked, TrustedRandomAccess};
+use crate::iter::{FusedIterator, TrustedLen};
+use crate::ops::Try;
 
 /// An iterator that copies the elements of an underlying iterator.
 ///
diff --git a/library/core/src/iter/adapters/enumerate.rs b/library/core/src/iter/adapters/enumerate.rs
index c42028ddeed..5978c2da98c 100644
--- a/library/core/src/iter/adapters/enumerate.rs
+++ b/library/core/src/iter/adapters/enumerate.rs
@@ -1,10 +1,6 @@
-use crate::{
-    iter::{
-        adapters::{zip::try_get_unchecked, SourceIter, TrustedRandomAccess},
-        FusedIterator, InPlaceIterable, TrustedLen,
-    },
-    ops::{Add, AddAssign, Try},
-};
+use crate::iter::adapters::{zip::try_get_unchecked, SourceIter, TrustedRandomAccess};
+use crate::iter::{FusedIterator, InPlaceIterable, TrustedLen};
+use crate::ops::{Add, AddAssign, Try};
 
 /// An iterator that yields the current count and the element during iteration.
 ///
diff --git a/library/core/src/iter/adapters/filter.rs b/library/core/src/iter/adapters/filter.rs
index 4de520eaca3..f8d684fcdda 100644
--- a/library/core/src/iter/adapters/filter.rs
+++ b/library/core/src/iter/adapters/filter.rs
@@ -1,8 +1,6 @@
-use crate::{
-    fmt,
-    iter::{adapters::SourceIter, FusedIterator, InPlaceIterable},
-    ops::Try,
-};
+use crate::fmt;
+use crate::iter::{adapters::SourceIter, FusedIterator, InPlaceIterable};
+use crate::ops::Try;
 
 /// An iterator that filters the elements of `iter` with `predicate`.
 ///
diff --git a/library/core/src/iter/adapters/filter_map.rs b/library/core/src/iter/adapters/filter_map.rs
index c7c63db3cdc..0dccf2c533b 100644
--- a/library/core/src/iter/adapters/filter_map.rs
+++ b/library/core/src/iter/adapters/filter_map.rs
@@ -1,9 +1,6 @@
-use crate::{
-    fmt,
-    iter::{adapters::SourceIter, FusedIterator, InPlaceIterable},
-    ops::ControlFlow,
-    ops::Try,
-};
+use crate::fmt;
+use crate::iter::{adapters::SourceIter, FusedIterator, InPlaceIterable};
+use crate::ops::{ControlFlow, Try};
 
 /// An iterator that uses `f` to both filter and map elements from `iter`.
 ///
diff --git a/library/core/src/iter/adapters/flatten.rs b/library/core/src/iter/adapters/flatten.rs
index d38b648cd16..ff85e114dc9 100644
--- a/library/core/src/iter/adapters/flatten.rs
+++ b/library/core/src/iter/adapters/flatten.rs
@@ -1,8 +1,6 @@
-use crate::{
-    fmt,
-    iter::{DoubleEndedIterator, Fuse, FusedIterator, Iterator, Map},
-    ops::Try,
-};
+use crate::fmt;
+use crate::iter::{DoubleEndedIterator, Fuse, FusedIterator, Iterator, Map};
+use crate::ops::Try;
 
 /// An iterator that maps each element to an iterator, and yields the elements
 /// of the produced iterators.
diff --git a/library/core/src/iter/adapters/fuse.rs b/library/core/src/iter/adapters/fuse.rs
index c159e67773b..ae074065315 100644
--- a/library/core/src/iter/adapters/fuse.rs
+++ b/library/core/src/iter/adapters/fuse.rs
@@ -1,11 +1,7 @@
-use crate::{
-    intrinsics,
-    iter::{
-        adapters::{zip::try_get_unchecked, InPlaceIterable, SourceIter},
-        DoubleEndedIterator, ExactSizeIterator, FusedIterator, Iterator, TrustedRandomAccess,
-    },
-    ops::Try,
-};
+use crate::intrinsics;
+use crate::iter::adapters::{zip::try_get_unchecked, InPlaceIterable, SourceIter};
+use crate::iter::{DoubleEndedIterator, ExactSizeIterator, FusedIterator, TrustedRandomAccess};
+use crate::ops::Try;
 
 /// An iterator that yields `None` forever after the underlying iterator
 /// yields `None` once.
diff --git a/library/core/src/iter/adapters/inspect.rs b/library/core/src/iter/adapters/inspect.rs
index ae2e5eac728..88f5ee61b6b 100644
--- a/library/core/src/iter/adapters/inspect.rs
+++ b/library/core/src/iter/adapters/inspect.rs
@@ -1,8 +1,6 @@
-use crate::{
-    fmt,
-    iter::{adapters::SourceIter, FusedIterator, InPlaceIterable},
-    ops::Try,
-};
+use crate::fmt;
+use crate::iter::{adapters::SourceIter, FusedIterator, InPlaceIterable};
+use crate::ops::Try;
 
 /// An iterator that calls a function with a reference to each element before
 /// yielding it.
diff --git a/library/core/src/iter/adapters/map.rs b/library/core/src/iter/adapters/map.rs
index 0691f997f7b..12673806ec4 100644
--- a/library/core/src/iter/adapters/map.rs
+++ b/library/core/src/iter/adapters/map.rs
@@ -1,11 +1,7 @@
-use crate::{
-    fmt,
-    iter::{
-        adapters::{zip::try_get_unchecked, SourceIter, TrustedRandomAccess},
-        FusedIterator, InPlaceIterable, TrustedLen,
-    },
-    ops::Try,
-};
+use crate::fmt;
+use crate::iter::adapters::{zip::try_get_unchecked, SourceIter, TrustedRandomAccess};
+use crate::iter::{FusedIterator, InPlaceIterable, TrustedLen};
+use crate::ops::Try;
 
 /// An iterator that maps the values of `iter` with `f`.
 ///
diff --git a/library/core/src/iter/adapters/map_while.rs b/library/core/src/iter/adapters/map_while.rs
index a3dcbb4d82f..26114d53284 100644
--- a/library/core/src/iter/adapters/map_while.rs
+++ b/library/core/src/iter/adapters/map_while.rs
@@ -1,8 +1,6 @@
-use crate::{
-    fmt,
-    iter::{adapters::SourceIter, InPlaceIterable},
-    ops::{ControlFlow, Try},
-};
+use crate::fmt;
+use crate::iter::{adapters::SourceIter, InPlaceIterable};
+use crate::ops::{ControlFlow, Try};
 
 /// An iterator that only accepts elements while `predicate` returns `Some(_)`.
 ///
diff --git a/library/core/src/iter/adapters/mod.rs b/library/core/src/iter/adapters/mod.rs
index 1969d35fec4..5ef5717085e 100644
--- a/library/core/src/iter/adapters/mod.rs
+++ b/library/core/src/iter/adapters/mod.rs
@@ -1,7 +1,5 @@
-use crate::{
-    iter::{InPlaceIterable, Iterator},
-    ops::{ControlFlow, Try},
-};
+use crate::iter::{InPlaceIterable, Iterator};
+use crate::ops::{ControlFlow, Try};
 
 mod chain;
 mod cloned;
diff --git a/library/core/src/iter/adapters/peekable.rs b/library/core/src/iter/adapters/peekable.rs
index 1822e10bdf6..e7fb3abc942 100644
--- a/library/core/src/iter/adapters/peekable.rs
+++ b/library/core/src/iter/adapters/peekable.rs
@@ -1,7 +1,5 @@
-use crate::{
-    iter::{adapters::SourceIter, FusedIterator, InPlaceIterable, TrustedLen},
-    ops::Try,
-};
+use crate::iter::{adapters::SourceIter, FusedIterator, InPlaceIterable, TrustedLen};
+use crate::ops::Try;
 
 /// An iterator with a `peek()` that returns an optional reference to the next
 /// element.
diff --git a/library/core/src/iter/adapters/rev.rs b/library/core/src/iter/adapters/rev.rs
index 48ec0a80ad9..105ed40a3ed 100644
--- a/library/core/src/iter/adapters/rev.rs
+++ b/library/core/src/iter/adapters/rev.rs
@@ -1,7 +1,5 @@
-use crate::{
-    iter::{FusedIterator, TrustedLen},
-    ops::Try,
-};
+use crate::iter::{FusedIterator, TrustedLen};
+use crate::ops::Try;
 
 /// A double-ended iterator with the direction inverted.
 ///
diff --git a/library/core/src/iter/adapters/scan.rs b/library/core/src/iter/adapters/scan.rs
index 12c11419c70..0214899295e 100644
--- a/library/core/src/iter/adapters/scan.rs
+++ b/library/core/src/iter/adapters/scan.rs
@@ -1,8 +1,6 @@
-use crate::{
-    fmt,
-    iter::{adapters::SourceIter, InPlaceIterable},
-    ops::{ControlFlow, Try},
-};
+use crate::fmt;
+use crate::iter::{adapters::SourceIter, InPlaceIterable};
+use crate::ops::{ControlFlow, Try};
 
 /// An iterator to maintain state while iterating another iterator.
 ///
diff --git a/library/core/src/iter/adapters/skip.rs b/library/core/src/iter/adapters/skip.rs
index ff2d07c0c0d..dd5325660c3 100644
--- a/library/core/src/iter/adapters/skip.rs
+++ b/library/core/src/iter/adapters/skip.rs
@@ -1,7 +1,5 @@
-use crate::{
-    iter::{adapters::SourceIter, FusedIterator, InPlaceIterable},
-    ops::{ControlFlow, Try},
-};
+use crate::iter::{adapters::SourceIter, FusedIterator, InPlaceIterable};
+use crate::ops::{ControlFlow, Try};
 
 /// An iterator that skips over `n` elements of `iter`.
 ///
diff --git a/library/core/src/iter/adapters/skip_while.rs b/library/core/src/iter/adapters/skip_while.rs
index cda8f9188d2..efcb469fc95 100644
--- a/library/core/src/iter/adapters/skip_while.rs
+++ b/library/core/src/iter/adapters/skip_while.rs
@@ -1,8 +1,6 @@
-use crate::{
-    fmt,
-    iter::{adapters::SourceIter, FusedIterator, InPlaceIterable},
-    ops::Try,
-};
+use crate::fmt;
+use crate::iter::{adapters::SourceIter, FusedIterator, InPlaceIterable};
+use crate::ops::Try;
 
 /// An iterator that rejects elements while `predicate` returns `true`.
 ///
diff --git a/library/core/src/iter/adapters/take.rs b/library/core/src/iter/adapters/take.rs
index b9a8c7ff2bc..9efc7a480ae 100644
--- a/library/core/src/iter/adapters/take.rs
+++ b/library/core/src/iter/adapters/take.rs
@@ -1,8 +1,6 @@
-use crate::{
-    cmp,
-    iter::{adapters::SourceIter, FusedIterator, InPlaceIterable, TrustedLen},
-    ops::{ControlFlow, Try},
-};
+use crate::cmp;
+use crate::iter::{adapters::SourceIter, FusedIterator, InPlaceIterable, TrustedLen};
+use crate::ops::{ControlFlow, Try};
 
 /// An iterator that only iterates over the first `n` iterations of `iter`.
 ///
diff --git a/library/core/src/iter/adapters/take_while.rs b/library/core/src/iter/adapters/take_while.rs
index aae0b20b83c..746eb41f4c3 100644
--- a/library/core/src/iter/adapters/take_while.rs
+++ b/library/core/src/iter/adapters/take_while.rs
@@ -1,8 +1,6 @@
-use crate::{
-    fmt,
-    iter::{adapters::SourceIter, FusedIterator, InPlaceIterable},
-    ops::{ControlFlow, Try},
-};
+use crate::fmt;
+use crate::iter::{adapters::SourceIter, FusedIterator, InPlaceIterable};
+use crate::ops::{ControlFlow, Try};
 
 /// An iterator that only accepts elements while `predicate` returns `true`.
 ///
diff --git a/library/core/src/iter/adapters/zip.rs b/library/core/src/iter/adapters/zip.rs
index fdc4035a612..8cd4c775231 100644
--- a/library/core/src/iter/adapters/zip.rs
+++ b/library/core/src/iter/adapters/zip.rs
@@ -1,11 +1,7 @@
-use crate::{
-    cmp,
-    fmt::{self, Debug},
-    iter::{
-        DoubleEndedIterator, ExactSizeIterator, FusedIterator, InPlaceIterable, Iterator,
-        SourceIter, TrustedLen,
-    },
-};
+use crate::cmp;
+use crate::fmt::{self, Debug};
+use crate::iter::{DoubleEndedIterator, ExactSizeIterator, FusedIterator, Iterator};
+use crate::iter::{InPlaceIterable, SourceIter, TrustedLen};
 
 /// An iterator that iterates two other iterators simultaneously.
 ///
diff --git a/library/core/src/iter/sources/empty.rs b/library/core/src/iter/sources/empty.rs
index 45412754a11..5d4a9fe8c6c 100644
--- a/library/core/src/iter/sources/empty.rs
+++ b/library/core/src/iter/sources/empty.rs
@@ -1,8 +1,6 @@
-use crate::{
-    fmt,
-    iter::{FusedIterator, TrustedLen},
-    marker,
-};
+use crate::fmt;
+use crate::iter::{FusedIterator, TrustedLen};
+use crate::marker;
 
 /// Creates an iterator that yields nothing.
 ///