diff --git a/clippy_lints/src/checked_conversions.rs b/clippy_lints/src/checked_conversions.rs
index 28c77ea40ef..7eeaaa01921 100644
--- a/clippy_lints/src/checked_conversions.rs
+++ b/clippy_lints/src/checked_conversions.rs
@@ -30,7 +30,6 @@ declare_clippy_lint! {
     /// Could be written:
     ///
     /// ```rust
-    /// # use std::convert::TryFrom;
     /// # let foo = 1;
     /// # let _ =
     /// i32::try_from(foo).is_ok()
diff --git a/clippy_lints/src/enum_clike.rs b/clippy_lints/src/enum_clike.rs
index 43b405c9a8e..10be245b362 100644
--- a/clippy_lints/src/enum_clike.rs
+++ b/clippy_lints/src/enum_clike.rs
@@ -8,7 +8,6 @@ use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::ty::util::IntTypeExt;
 use rustc_middle::ty::{self, IntTy, UintTy};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
-use std::convert::TryFrom;
 
 declare_clippy_lint! {
     /// ### What it does
diff --git a/clippy_lints/src/excessive_bools.rs b/clippy_lints/src/excessive_bools.rs
index 245a4fc12fd..7a81fb37e84 100644
--- a/clippy_lints/src/excessive_bools.rs
+++ b/clippy_lints/src/excessive_bools.rs
@@ -4,8 +4,6 @@ use rustc_lint::{EarlyContext, EarlyLintPass};
 use rustc_session::{declare_tool_lint, impl_lint_pass};
 use rustc_span::{sym, Span};
 
-use std::convert::TryInto;
-
 declare_clippy_lint! {
     /// ### What it does
     /// Checks for excessive
diff --git a/clippy_lints/src/fallible_impl_from.rs b/clippy_lints/src/fallible_impl_from.rs
index 088d9996516..9f868df3ad0 100644
--- a/clippy_lints/src/fallible_impl_from.rs
+++ b/clippy_lints/src/fallible_impl_from.rs
@@ -32,7 +32,6 @@ declare_clippy_lint! {
     /// // Good
     /// struct Foo(i32);
     ///
-    /// use std::convert::TryFrom;
     /// impl TryFrom<String> for Foo {
     ///     type Error = ();
     ///     fn try_from(s: String) -> Result<Self, Self::Error> {
diff --git a/clippy_lints/src/index_refutable_slice.rs b/clippy_lints/src/index_refutable_slice.rs
index 07b0604f78d..9ce5b8e17a9 100644
--- a/clippy_lints/src/index_refutable_slice.rs
+++ b/clippy_lints/src/index_refutable_slice.rs
@@ -14,7 +14,6 @@ use rustc_middle::ty;
 use rustc_semver::RustcVersion;
 use rustc_session::{declare_tool_lint, impl_lint_pass};
 use rustc_span::{symbol::Ident, Span};
-use std::convert::TryInto;
 
 declare_clippy_lint! {
     /// ### What it does
diff --git a/clippy_lints/src/methods/mod.rs b/clippy_lints/src/methods/mod.rs
index cfeee4d0c70..3e07961fcb3 100644
--- a/clippy_lints/src/methods/mod.rs
+++ b/clippy_lints/src/methods/mod.rs
@@ -1776,8 +1776,6 @@ declare_clippy_lint! {
     ///
     /// ### Example
     /// ```rust
-    /// use std::iter::FromIterator;
-    ///
     /// let five_fives = std::iter::repeat(5).take(5);
     ///
     /// let v = Vec::from_iter(five_fives);
diff --git a/clippy_lints/src/redundant_clone.rs b/clippy_lints/src/redundant_clone.rs
index 954e702a1f8..9904617353f 100644
--- a/clippy_lints/src/redundant_clone.rs
+++ b/clippy_lints/src/redundant_clone.rs
@@ -19,7 +19,6 @@ use rustc_mir_dataflow::{Analysis, AnalysisDomain, CallReturnPlaces, GenKill, Ge
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::source_map::{BytePos, Span};
 use rustc_span::sym;
-use std::convert::TryFrom;
 use std::ops::ControlFlow;
 
 macro_rules! unwrap_or_continue {
diff --git a/clippy_lints/src/regex.rs b/clippy_lints/src/regex.rs
index 78ca7622f4a..67129299e2f 100644
--- a/clippy_lints/src/regex.rs
+++ b/clippy_lints/src/regex.rs
@@ -7,7 +7,6 @@ use rustc_hir::{BorrowKind, Expr, ExprKind};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::source_map::{BytePos, Span};
-use std::convert::TryFrom;
 
 declare_clippy_lint! {
     /// ### What it does
diff --git a/clippy_lints/src/tabs_in_doc_comments.rs b/clippy_lints/src/tabs_in_doc_comments.rs
index 15543b6a262..e223aea297f 100644
--- a/clippy_lints/src/tabs_in_doc_comments.rs
+++ b/clippy_lints/src/tabs_in_doc_comments.rs
@@ -4,7 +4,6 @@ use rustc_errors::Applicability;
 use rustc_lint::{EarlyContext, EarlyLintPass};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::source_map::{BytePos, Span};
-use std::convert::TryFrom;
 
 declare_clippy_lint! {
     /// ### What it does
diff --git a/clippy_utils/src/consts.rs b/clippy_utils/src/consts.rs
index 720dfe72237..75fab624fda 100644
--- a/clippy_utils/src/consts.rs
+++ b/clippy_utils/src/consts.rs
@@ -13,7 +13,6 @@ use rustc_middle::ty::{self, FloatTy, ScalarInt, Ty, TyCtxt};
 use rustc_middle::{bug, span_bug};
 use rustc_span::symbol::Symbol;
 use std::cmp::Ordering::{self, Equal};
-use std::convert::TryInto;
 use std::hash::{Hash, Hasher};
 use std::iter;
 
diff --git a/clippy_utils/src/sugg.rs b/clippy_utils/src/sugg.rs
index 855d3657dd4..1de73a80ad2 100644
--- a/clippy_utils/src/sugg.rs
+++ b/clippy_utils/src/sugg.rs
@@ -17,7 +17,6 @@ use rustc_middle::ty;
 use rustc_span::source_map::{BytePos, CharPos, Pos, Span, SyntaxContext};
 use rustc_typeck::expr_use_visitor::{Delegate, ExprUseVisitor, PlaceBase, PlaceWithHirId};
 use std::borrow::Cow;
-use std::convert::TryInto;
 use std::fmt::{Display, Write as _};
 use std::iter;
 use std::ops::{Add, Neg, Not, Sub};
diff --git a/tests/ui-toml/unwrap_used/unwrap_used.rs b/tests/ui-toml/unwrap_used/unwrap_used.rs
index a639de07971..74d0d7c2650 100644
--- a/tests/ui-toml/unwrap_used/unwrap_used.rs
+++ b/tests/ui-toml/unwrap_used/unwrap_used.rs
@@ -7,7 +7,6 @@
 use std::collections::BTreeMap;
 use std::collections::HashMap;
 use std::collections::VecDeque;
-use std::iter::FromIterator;
 
 struct GetFalsePositive {
     arr: [u32; 3],
diff --git a/tests/ui-toml/unwrap_used/unwrap_used.stderr b/tests/ui-toml/unwrap_used/unwrap_used.stderr
index 6c3adc5395f..6bcfa0a8b56 100644
--- a/tests/ui-toml/unwrap_used/unwrap_used.stderr
+++ b/tests/ui-toml/unwrap_used/unwrap_used.stderr
@@ -1,5 +1,5 @@
 error: called `.get().unwrap()` on a slice. Using `[]` is more clear and more concise
-  --> $DIR/unwrap_used.rs:36:17
+  --> $DIR/unwrap_used.rs:35:17
    |
 LL |         let _ = boxed_slice.get(1).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&boxed_slice[1]`
@@ -11,7 +11,7 @@ LL | #![deny(clippy::get_unwrap)]
    |         ^^^^^^^^^^^^^^^^^^
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/unwrap_used.rs:36:17
+  --> $DIR/unwrap_used.rs:35:17
    |
 LL |         let _ = boxed_slice.get(1).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -20,13 +20,13 @@ LL |         let _ = boxed_slice.get(1).unwrap();
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get().unwrap()` on a slice. Using `[]` is more clear and more concise
-  --> $DIR/unwrap_used.rs:37:17
+  --> $DIR/unwrap_used.rs:36:17
    |
 LL |         let _ = some_slice.get(0).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&some_slice[0]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/unwrap_used.rs:37:17
+  --> $DIR/unwrap_used.rs:36:17
    |
 LL |         let _ = some_slice.get(0).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -34,13 +34,13 @@ LL |         let _ = some_slice.get(0).unwrap();
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
-  --> $DIR/unwrap_used.rs:38:17
+  --> $DIR/unwrap_used.rs:37:17
    |
 LL |         let _ = some_vec.get(0).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&some_vec[0]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/unwrap_used.rs:38:17
+  --> $DIR/unwrap_used.rs:37:17
    |
 LL |         let _ = some_vec.get(0).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^
@@ -48,13 +48,13 @@ LL |         let _ = some_vec.get(0).unwrap();
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get().unwrap()` on a VecDeque. Using `[]` is more clear and more concise
-  --> $DIR/unwrap_used.rs:39:17
+  --> $DIR/unwrap_used.rs:38:17
    |
 LL |         let _ = some_vecdeque.get(0).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&some_vecdeque[0]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/unwrap_used.rs:39:17
+  --> $DIR/unwrap_used.rs:38:17
    |
 LL |         let _ = some_vecdeque.get(0).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -62,13 +62,13 @@ LL |         let _ = some_vecdeque.get(0).unwrap();
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
-  --> $DIR/unwrap_used.rs:40:17
+  --> $DIR/unwrap_used.rs:39:17
    |
 LL |         let _ = some_hashmap.get(&1).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&some_hashmap[&1]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/unwrap_used.rs:40:17
+  --> $DIR/unwrap_used.rs:39:17
    |
 LL |         let _ = some_hashmap.get(&1).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -76,13 +76,13 @@ LL |         let _ = some_hashmap.get(&1).unwrap();
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get().unwrap()` on a BTreeMap. Using `[]` is more clear and more concise
-  --> $DIR/unwrap_used.rs:41:17
+  --> $DIR/unwrap_used.rs:40:17
    |
 LL |         let _ = some_btreemap.get(&1).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&some_btreemap[&1]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/unwrap_used.rs:41:17
+  --> $DIR/unwrap_used.rs:40:17
    |
 LL |         let _ = some_btreemap.get(&1).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -90,13 +90,13 @@ LL |         let _ = some_btreemap.get(&1).unwrap();
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get().unwrap()` on a slice. Using `[]` is more clear and more concise
-  --> $DIR/unwrap_used.rs:45:21
+  --> $DIR/unwrap_used.rs:44:21
    |
 LL |         let _: u8 = *boxed_slice.get(1).unwrap();
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `boxed_slice[1]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/unwrap_used.rs:45:22
+  --> $DIR/unwrap_used.rs:44:22
    |
 LL |         let _: u8 = *boxed_slice.get(1).unwrap();
    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -104,13 +104,13 @@ LL |         let _: u8 = *boxed_slice.get(1).unwrap();
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get_mut().unwrap()` on a slice. Using `[]` is more clear and more concise
-  --> $DIR/unwrap_used.rs:50:9
+  --> $DIR/unwrap_used.rs:49:9
    |
 LL |         *boxed_slice.get_mut(0).unwrap() = 1;
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `boxed_slice[0]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/unwrap_used.rs:50:10
+  --> $DIR/unwrap_used.rs:49:10
    |
 LL |         *boxed_slice.get_mut(0).unwrap() = 1;
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -118,13 +118,13 @@ LL |         *boxed_slice.get_mut(0).unwrap() = 1;
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get_mut().unwrap()` on a slice. Using `[]` is more clear and more concise
-  --> $DIR/unwrap_used.rs:51:9
+  --> $DIR/unwrap_used.rs:50:9
    |
 LL |         *some_slice.get_mut(0).unwrap() = 1;
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `some_slice[0]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/unwrap_used.rs:51:10
+  --> $DIR/unwrap_used.rs:50:10
    |
 LL |         *some_slice.get_mut(0).unwrap() = 1;
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -132,13 +132,13 @@ LL |         *some_slice.get_mut(0).unwrap() = 1;
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get_mut().unwrap()` on a Vec. Using `[]` is more clear and more concise
-  --> $DIR/unwrap_used.rs:52:9
+  --> $DIR/unwrap_used.rs:51:9
    |
 LL |         *some_vec.get_mut(0).unwrap() = 1;
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `some_vec[0]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/unwrap_used.rs:52:10
+  --> $DIR/unwrap_used.rs:51:10
    |
 LL |         *some_vec.get_mut(0).unwrap() = 1;
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -146,13 +146,13 @@ LL |         *some_vec.get_mut(0).unwrap() = 1;
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get_mut().unwrap()` on a VecDeque. Using `[]` is more clear and more concise
-  --> $DIR/unwrap_used.rs:53:9
+  --> $DIR/unwrap_used.rs:52:9
    |
 LL |         *some_vecdeque.get_mut(0).unwrap() = 1;
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `some_vecdeque[0]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/unwrap_used.rs:53:10
+  --> $DIR/unwrap_used.rs:52:10
    |
 LL |         *some_vecdeque.get_mut(0).unwrap() = 1;
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -160,13 +160,13 @@ LL |         *some_vecdeque.get_mut(0).unwrap() = 1;
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
-  --> $DIR/unwrap_used.rs:65:17
+  --> $DIR/unwrap_used.rs:64:17
    |
 LL |         let _ = some_vec.get(0..1).unwrap().to_vec();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `some_vec[0..1]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/unwrap_used.rs:65:17
+  --> $DIR/unwrap_used.rs:64:17
    |
 LL |         let _ = some_vec.get(0..1).unwrap().to_vec();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -174,13 +174,13 @@ LL |         let _ = some_vec.get(0..1).unwrap().to_vec();
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get_mut().unwrap()` on a Vec. Using `[]` is more clear and more concise
-  --> $DIR/unwrap_used.rs:66:17
+  --> $DIR/unwrap_used.rs:65:17
    |
 LL |         let _ = some_vec.get_mut(0..1).unwrap().to_vec();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `some_vec[0..1]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/unwrap_used.rs:66:17
+  --> $DIR/unwrap_used.rs:65:17
    |
 LL |         let _ = some_vec.get_mut(0..1).unwrap().to_vec();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -188,7 +188,7 @@ LL |         let _ = some_vec.get_mut(0..1).unwrap().to_vec();
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get().unwrap()` on a slice. Using `[]` is more clear and more concise
-  --> $DIR/unwrap_used.rs:73:13
+  --> $DIR/unwrap_used.rs:72:13
    |
 LL |     let _ = boxed_slice.get(1).unwrap();
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&boxed_slice[1]`
diff --git a/tests/ui/auxiliary/proc_macro_suspicious_else_formatting.rs b/tests/ui/auxiliary/proc_macro_suspicious_else_formatting.rs
index 26c88489b03..a2ef0fe827c 100644
--- a/tests/ui/auxiliary/proc_macro_suspicious_else_formatting.rs
+++ b/tests/ui/auxiliary/proc_macro_suspicious_else_formatting.rs
@@ -5,7 +5,6 @@
 
 extern crate proc_macro;
 use proc_macro::{token_stream, Delimiter, Group, Ident, Span, TokenStream, TokenTree};
-use std::iter::FromIterator;
 
 fn read_ident(iter: &mut token_stream::IntoIter) -> Ident {
     match iter.next() {
diff --git a/tests/ui/checked_conversions.fixed b/tests/ui/checked_conversions.fixed
index 12290db3dcf..0983d393b56 100644
--- a/tests/ui/checked_conversions.fixed
+++ b/tests/ui/checked_conversions.fixed
@@ -7,8 +7,6 @@
 )]
 #![warn(clippy::checked_conversions)]
 
-use std::convert::TryFrom;
-
 // Positive tests
 
 // Signed to unsigned
diff --git a/tests/ui/checked_conversions.rs b/tests/ui/checked_conversions.rs
index 895a301e821..7d26ace47fd 100644
--- a/tests/ui/checked_conversions.rs
+++ b/tests/ui/checked_conversions.rs
@@ -7,8 +7,6 @@
 )]
 #![warn(clippy::checked_conversions)]
 
-use std::convert::TryFrom;
-
 // Positive tests
 
 // Signed to unsigned
diff --git a/tests/ui/checked_conversions.stderr b/tests/ui/checked_conversions.stderr
index 18518def0ac..2e518040561 100644
--- a/tests/ui/checked_conversions.stderr
+++ b/tests/ui/checked_conversions.stderr
@@ -1,5 +1,5 @@
 error: checked cast can be simplified
-  --> $DIR/checked_conversions.rs:17:13
+  --> $DIR/checked_conversions.rs:15:13
    |
 LL |     let _ = value <= (u32::max_value() as i64) && value >= 0;
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::try_from(value).is_ok()`
@@ -7,91 +7,91 @@ LL |     let _ = value <= (u32::max_value() as i64) && value >= 0;
    = note: `-D clippy::checked-conversions` implied by `-D warnings`
 
 error: checked cast can be simplified
-  --> $DIR/checked_conversions.rs:18:13
+  --> $DIR/checked_conversions.rs:16:13
    |
 LL |     let _ = value <= (u32::MAX as i64) && value >= 0;
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::try_from(value).is_ok()`
 
 error: checked cast can be simplified
-  --> $DIR/checked_conversions.rs:22:13
+  --> $DIR/checked_conversions.rs:20:13
    |
 LL |     let _ = value <= i64::from(u16::max_value()) && value >= 0;
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u16::try_from(value).is_ok()`
 
 error: checked cast can be simplified
-  --> $DIR/checked_conversions.rs:23:13
+  --> $DIR/checked_conversions.rs:21:13
    |
 LL |     let _ = value <= i64::from(u16::MAX) && value >= 0;
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u16::try_from(value).is_ok()`
 
 error: checked cast can be simplified
-  --> $DIR/checked_conversions.rs:27:13
+  --> $DIR/checked_conversions.rs:25:13
    |
 LL |     let _ = value <= (u8::max_value() as isize) && value >= 0;
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u8::try_from(value).is_ok()`
 
 error: checked cast can be simplified
-  --> $DIR/checked_conversions.rs:28:13
+  --> $DIR/checked_conversions.rs:26:13
    |
 LL |     let _ = value <= (u8::MAX as isize) && value >= 0;
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u8::try_from(value).is_ok()`
 
 error: checked cast can be simplified
-  --> $DIR/checked_conversions.rs:34:13
+  --> $DIR/checked_conversions.rs:32:13
    |
 LL |     let _ = value <= (i32::max_value() as i64) && value >= (i32::min_value() as i64);
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `i32::try_from(value).is_ok()`
 
 error: checked cast can be simplified
-  --> $DIR/checked_conversions.rs:35:13
+  --> $DIR/checked_conversions.rs:33:13
    |
 LL |     let _ = value <= (i32::MAX as i64) && value >= (i32::MIN as i64);
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `i32::try_from(value).is_ok()`
 
 error: checked cast can be simplified
-  --> $DIR/checked_conversions.rs:39:13
+  --> $DIR/checked_conversions.rs:37:13
    |
 LL |     let _ = value <= i64::from(i16::max_value()) && value >= i64::from(i16::min_value());
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `i16::try_from(value).is_ok()`
 
 error: checked cast can be simplified
-  --> $DIR/checked_conversions.rs:40:13
+  --> $DIR/checked_conversions.rs:38:13
    |
 LL |     let _ = value <= i64::from(i16::MAX) && value >= i64::from(i16::MIN);
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `i16::try_from(value).is_ok()`
 
 error: checked cast can be simplified
-  --> $DIR/checked_conversions.rs:46:13
+  --> $DIR/checked_conversions.rs:44:13
    |
 LL |     let _ = value <= i32::max_value() as u32;
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `i32::try_from(value).is_ok()`
 
 error: checked cast can be simplified
-  --> $DIR/checked_conversions.rs:47:13
+  --> $DIR/checked_conversions.rs:45:13
    |
 LL |     let _ = value <= i32::MAX as u32;
    |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `i32::try_from(value).is_ok()`
 
 error: checked cast can be simplified
-  --> $DIR/checked_conversions.rs:51:13
+  --> $DIR/checked_conversions.rs:49:13
    |
 LL |     let _ = value <= isize::max_value() as usize && value as i32 == 5;
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `isize::try_from(value).is_ok()`
 
 error: checked cast can be simplified
-  --> $DIR/checked_conversions.rs:52:13
+  --> $DIR/checked_conversions.rs:50:13
    |
 LL |     let _ = value <= isize::MAX as usize && value as i32 == 5;
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `isize::try_from(value).is_ok()`
 
 error: checked cast can be simplified
-  --> $DIR/checked_conversions.rs:56:13
+  --> $DIR/checked_conversions.rs:54:13
    |
 LL |     let _ = value <= u16::max_value() as u32 && value as i32 == 5;
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u16::try_from(value).is_ok()`
 
 error: checked cast can be simplified
-  --> $DIR/checked_conversions.rs:57:13
+  --> $DIR/checked_conversions.rs:55:13
    |
 LL |     let _ = value <= u16::MAX as u32 && value as i32 == 5;
    |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u16::try_from(value).is_ok()`
diff --git a/tests/ui/crashes/auxiliary/proc_macro_crash.rs b/tests/ui/crashes/auxiliary/proc_macro_crash.rs
index ed8e7a708a5..5ff2af7cd82 100644
--- a/tests/ui/crashes/auxiliary/proc_macro_crash.rs
+++ b/tests/ui/crashes/auxiliary/proc_macro_crash.rs
@@ -12,7 +12,6 @@
 extern crate proc_macro;
 
 use proc_macro::{Delimiter, Group, Ident, Span, TokenStream, TokenTree};
-use std::iter::FromIterator;
 
 #[proc_macro]
 pub fn macro_test(input_stream: TokenStream) -> TokenStream {
diff --git a/tests/ui/from_iter_instead_of_collect.fixed b/tests/ui/from_iter_instead_of_collect.fixed
index 12db43b5343..403c3b3e443 100644
--- a/tests/ui/from_iter_instead_of_collect.fixed
+++ b/tests/ui/from_iter_instead_of_collect.fixed
@@ -4,7 +4,6 @@
 #![allow(unused_imports)]
 
 use std::collections::{BTreeMap, BTreeSet, HashMap, VecDeque};
-use std::iter::FromIterator;
 
 struct Foo(Vec<bool>);
 
diff --git a/tests/ui/from_iter_instead_of_collect.rs b/tests/ui/from_iter_instead_of_collect.rs
index f5ec190e0cd..fefc7b01a65 100644
--- a/tests/ui/from_iter_instead_of_collect.rs
+++ b/tests/ui/from_iter_instead_of_collect.rs
@@ -4,7 +4,6 @@
 #![allow(unused_imports)]
 
 use std::collections::{BTreeMap, BTreeSet, HashMap, VecDeque};
-use std::iter::FromIterator;
 
 struct Foo(Vec<bool>);
 
diff --git a/tests/ui/from_iter_instead_of_collect.stderr b/tests/ui/from_iter_instead_of_collect.stderr
index 8f08ac8c3ff..8aa3c3c01f8 100644
--- a/tests/ui/from_iter_instead_of_collect.stderr
+++ b/tests/ui/from_iter_instead_of_collect.stderr
@@ -1,5 +1,5 @@
 error: usage of `FromIterator::from_iter`
-  --> $DIR/from_iter_instead_of_collect.rs:19:9
+  --> $DIR/from_iter_instead_of_collect.rs:18:9
    |
 LL |         <Self as FromIterator<bool>>::from_iter(iter.into_iter().copied())
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `iter.into_iter().copied().collect::<Self>()`
@@ -7,85 +7,85 @@ LL |         <Self as FromIterator<bool>>::from_iter(iter.into_iter().copied())
    = note: `-D clippy::from-iter-instead-of-collect` implied by `-D warnings`
 
 error: usage of `FromIterator::from_iter`
-  --> $DIR/from_iter_instead_of_collect.rs:25:13
+  --> $DIR/from_iter_instead_of_collect.rs:24:13
    |
 LL |     let _ = Vec::from_iter(iter_expr);
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `iter_expr.collect::<Vec<_>>()`
 
 error: usage of `FromIterator::from_iter`
-  --> $DIR/from_iter_instead_of_collect.rs:27:13
+  --> $DIR/from_iter_instead_of_collect.rs:26:13
    |
 LL |     let _ = HashMap::<usize, &i8>::from_iter(vec![5, 5, 5, 5].iter().enumerate());
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `vec![5, 5, 5, 5].iter().enumerate().collect::<HashMap<usize, &i8>>()`
 
 error: usage of `FromIterator::from_iter`
-  --> $DIR/from_iter_instead_of_collect.rs:32:19
+  --> $DIR/from_iter_instead_of_collect.rs:31:19
    |
 LL |     assert_eq!(a, Vec::from_iter(0..3));
    |                   ^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `(0..3).collect::<Vec<_>>()`
 
 error: usage of `FromIterator::from_iter`
-  --> $DIR/from_iter_instead_of_collect.rs:33:19
+  --> $DIR/from_iter_instead_of_collect.rs:32:19
    |
 LL |     assert_eq!(a, Vec::<i32>::from_iter(0..3));
    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `(0..3).collect::<Vec<i32>>()`
 
 error: usage of `FromIterator::from_iter`
-  --> $DIR/from_iter_instead_of_collect.rs:35:17
+  --> $DIR/from_iter_instead_of_collect.rs:34:17
    |
 LL |     let mut b = VecDeque::from_iter(0..3);
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `(0..3).collect::<VecDeque<_>>()`
 
 error: usage of `FromIterator::from_iter`
-  --> $DIR/from_iter_instead_of_collect.rs:38:17
+  --> $DIR/from_iter_instead_of_collect.rs:37:17
    |
 LL |     let mut b = VecDeque::<i32>::from_iter(0..3);
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `(0..3).collect::<VecDeque<i32>>()`
 
 error: usage of `FromIterator::from_iter`
-  --> $DIR/from_iter_instead_of_collect.rs:43:21
+  --> $DIR/from_iter_instead_of_collect.rs:42:21
    |
 LL |         let mut b = collections::VecDeque::<i32>::from_iter(0..3);
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `(0..3).collect::<collections::VecDeque<i32>>()`
 
 error: usage of `FromIterator::from_iter`
-  --> $DIR/from_iter_instead_of_collect.rs:48:14
+  --> $DIR/from_iter_instead_of_collect.rs:47:14
    |
 LL |     let bm = BTreeMap::from_iter(values.iter().cloned());
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `values.iter().cloned().collect::<BTreeMap<_, _>>()`
 
 error: usage of `FromIterator::from_iter`
-  --> $DIR/from_iter_instead_of_collect.rs:49:19
+  --> $DIR/from_iter_instead_of_collect.rs:48:19
    |
 LL |     let mut bar = BTreeMap::from_iter(bm.range(0..2));
    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `bm.range(0..2).collect::<BTreeMap<_, _>>()`
 
 error: usage of `FromIterator::from_iter`
-  --> $DIR/from_iter_instead_of_collect.rs:52:19
+  --> $DIR/from_iter_instead_of_collect.rs:51:19
    |
 LL |     let mut bts = BTreeSet::from_iter(0..3);
    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `(0..3).collect::<BTreeSet<_>>()`
 
 error: usage of `FromIterator::from_iter`
-  --> $DIR/from_iter_instead_of_collect.rs:56:17
+  --> $DIR/from_iter_instead_of_collect.rs:55:17
    |
 LL |         let _ = collections::BTreeSet::from_iter(0..3);
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `(0..3).collect::<collections::BTreeSet<_>>()`
 
 error: usage of `FromIterator::from_iter`
-  --> $DIR/from_iter_instead_of_collect.rs:57:17
+  --> $DIR/from_iter_instead_of_collect.rs:56:17
    |
 LL |         let _ = collections::BTreeSet::<u32>::from_iter(0..3);
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `(0..3).collect::<collections::BTreeSet<u32>>()`
 
 error: usage of `FromIterator::from_iter`
-  --> $DIR/from_iter_instead_of_collect.rs:60:15
+  --> $DIR/from_iter_instead_of_collect.rs:59:15
    |
 LL |     for _i in Vec::from_iter([1, 2, 3].iter()) {}
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `[1, 2, 3].iter().collect::<Vec<_>>()`
 
 error: usage of `FromIterator::from_iter`
-  --> $DIR/from_iter_instead_of_collect.rs:61:15
+  --> $DIR/from_iter_instead_of_collect.rs:60:15
    |
 LL |     for _i in Vec::<&i32>::from_iter([1, 2, 3].iter()) {}
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `[1, 2, 3].iter().collect::<Vec<&i32>>()`
diff --git a/tests/ui/get_unwrap.fixed b/tests/ui/get_unwrap.fixed
index c3a36dcabd1..8f165d67589 100644
--- a/tests/ui/get_unwrap.fixed
+++ b/tests/ui/get_unwrap.fixed
@@ -7,7 +7,6 @@
 use std::collections::BTreeMap;
 use std::collections::HashMap;
 use std::collections::VecDeque;
-use std::iter::FromIterator;
 
 struct GetFalsePositive {
     arr: [u32; 3],
diff --git a/tests/ui/get_unwrap.rs b/tests/ui/get_unwrap.rs
index d77a202aa39..786749daa74 100644
--- a/tests/ui/get_unwrap.rs
+++ b/tests/ui/get_unwrap.rs
@@ -7,7 +7,6 @@
 use std::collections::BTreeMap;
 use std::collections::HashMap;
 use std::collections::VecDeque;
-use std::iter::FromIterator;
 
 struct GetFalsePositive {
     arr: [u32; 3],
diff --git a/tests/ui/get_unwrap.stderr b/tests/ui/get_unwrap.stderr
index cb5f44fbd59..ea8fec52735 100644
--- a/tests/ui/get_unwrap.stderr
+++ b/tests/ui/get_unwrap.stderr
@@ -1,5 +1,5 @@
 error: called `.get().unwrap()` on a slice. Using `[]` is more clear and more concise
-  --> $DIR/get_unwrap.rs:36:17
+  --> $DIR/get_unwrap.rs:35:17
    |
 LL |         let _ = boxed_slice.get(1).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&boxed_slice[1]`
@@ -11,7 +11,7 @@ LL | #![deny(clippy::get_unwrap)]
    |         ^^^^^^^^^^^^^^^^^^
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/get_unwrap.rs:36:17
+  --> $DIR/get_unwrap.rs:35:17
    |
 LL |         let _ = boxed_slice.get(1).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -20,13 +20,13 @@ LL |         let _ = boxed_slice.get(1).unwrap();
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get().unwrap()` on a slice. Using `[]` is more clear and more concise
-  --> $DIR/get_unwrap.rs:37:17
+  --> $DIR/get_unwrap.rs:36:17
    |
 LL |         let _ = some_slice.get(0).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&some_slice[0]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/get_unwrap.rs:37:17
+  --> $DIR/get_unwrap.rs:36:17
    |
 LL |         let _ = some_slice.get(0).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -34,13 +34,13 @@ LL |         let _ = some_slice.get(0).unwrap();
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
-  --> $DIR/get_unwrap.rs:38:17
+  --> $DIR/get_unwrap.rs:37:17
    |
 LL |         let _ = some_vec.get(0).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&some_vec[0]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/get_unwrap.rs:38:17
+  --> $DIR/get_unwrap.rs:37:17
    |
 LL |         let _ = some_vec.get(0).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^
@@ -48,13 +48,13 @@ LL |         let _ = some_vec.get(0).unwrap();
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get().unwrap()` on a VecDeque. Using `[]` is more clear and more concise
-  --> $DIR/get_unwrap.rs:39:17
+  --> $DIR/get_unwrap.rs:38:17
    |
 LL |         let _ = some_vecdeque.get(0).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&some_vecdeque[0]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/get_unwrap.rs:39:17
+  --> $DIR/get_unwrap.rs:38:17
    |
 LL |         let _ = some_vecdeque.get(0).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -62,13 +62,13 @@ LL |         let _ = some_vecdeque.get(0).unwrap();
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
-  --> $DIR/get_unwrap.rs:40:17
+  --> $DIR/get_unwrap.rs:39:17
    |
 LL |         let _ = some_hashmap.get(&1).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&some_hashmap[&1]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/get_unwrap.rs:40:17
+  --> $DIR/get_unwrap.rs:39:17
    |
 LL |         let _ = some_hashmap.get(&1).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -76,13 +76,13 @@ LL |         let _ = some_hashmap.get(&1).unwrap();
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get().unwrap()` on a BTreeMap. Using `[]` is more clear and more concise
-  --> $DIR/get_unwrap.rs:41:17
+  --> $DIR/get_unwrap.rs:40:17
    |
 LL |         let _ = some_btreemap.get(&1).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&some_btreemap[&1]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/get_unwrap.rs:41:17
+  --> $DIR/get_unwrap.rs:40:17
    |
 LL |         let _ = some_btreemap.get(&1).unwrap();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -90,13 +90,13 @@ LL |         let _ = some_btreemap.get(&1).unwrap();
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get().unwrap()` on a slice. Using `[]` is more clear and more concise
-  --> $DIR/get_unwrap.rs:45:21
+  --> $DIR/get_unwrap.rs:44:21
    |
 LL |         let _: u8 = *boxed_slice.get(1).unwrap();
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `boxed_slice[1]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/get_unwrap.rs:45:22
+  --> $DIR/get_unwrap.rs:44:22
    |
 LL |         let _: u8 = *boxed_slice.get(1).unwrap();
    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -104,13 +104,13 @@ LL |         let _: u8 = *boxed_slice.get(1).unwrap();
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get_mut().unwrap()` on a slice. Using `[]` is more clear and more concise
-  --> $DIR/get_unwrap.rs:50:9
+  --> $DIR/get_unwrap.rs:49:9
    |
 LL |         *boxed_slice.get_mut(0).unwrap() = 1;
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `boxed_slice[0]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/get_unwrap.rs:50:10
+  --> $DIR/get_unwrap.rs:49:10
    |
 LL |         *boxed_slice.get_mut(0).unwrap() = 1;
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -118,13 +118,13 @@ LL |         *boxed_slice.get_mut(0).unwrap() = 1;
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get_mut().unwrap()` on a slice. Using `[]` is more clear and more concise
-  --> $DIR/get_unwrap.rs:51:9
+  --> $DIR/get_unwrap.rs:50:9
    |
 LL |         *some_slice.get_mut(0).unwrap() = 1;
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `some_slice[0]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/get_unwrap.rs:51:10
+  --> $DIR/get_unwrap.rs:50:10
    |
 LL |         *some_slice.get_mut(0).unwrap() = 1;
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -132,13 +132,13 @@ LL |         *some_slice.get_mut(0).unwrap() = 1;
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get_mut().unwrap()` on a Vec. Using `[]` is more clear and more concise
-  --> $DIR/get_unwrap.rs:52:9
+  --> $DIR/get_unwrap.rs:51:9
    |
 LL |         *some_vec.get_mut(0).unwrap() = 1;
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `some_vec[0]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/get_unwrap.rs:52:10
+  --> $DIR/get_unwrap.rs:51:10
    |
 LL |         *some_vec.get_mut(0).unwrap() = 1;
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -146,13 +146,13 @@ LL |         *some_vec.get_mut(0).unwrap() = 1;
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get_mut().unwrap()` on a VecDeque. Using `[]` is more clear and more concise
-  --> $DIR/get_unwrap.rs:53:9
+  --> $DIR/get_unwrap.rs:52:9
    |
 LL |         *some_vecdeque.get_mut(0).unwrap() = 1;
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `some_vecdeque[0]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/get_unwrap.rs:53:10
+  --> $DIR/get_unwrap.rs:52:10
    |
 LL |         *some_vecdeque.get_mut(0).unwrap() = 1;
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -160,13 +160,13 @@ LL |         *some_vecdeque.get_mut(0).unwrap() = 1;
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
-  --> $DIR/get_unwrap.rs:65:17
+  --> $DIR/get_unwrap.rs:64:17
    |
 LL |         let _ = some_vec.get(0..1).unwrap().to_vec();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `some_vec[0..1]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/get_unwrap.rs:65:17
+  --> $DIR/get_unwrap.rs:64:17
    |
 LL |         let _ = some_vec.get(0..1).unwrap().to_vec();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -174,13 +174,13 @@ LL |         let _ = some_vec.get(0..1).unwrap().to_vec();
    = help: if you don't want to handle the `None` case gracefully, consider using `expect()` to provide a better panic message
 
 error: called `.get_mut().unwrap()` on a Vec. Using `[]` is more clear and more concise
-  --> $DIR/get_unwrap.rs:66:17
+  --> $DIR/get_unwrap.rs:65:17
    |
 LL |         let _ = some_vec.get_mut(0..1).unwrap().to_vec();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `some_vec[0..1]`
 
 error: used `unwrap()` on `an Option` value
-  --> $DIR/get_unwrap.rs:66:17
+  --> $DIR/get_unwrap.rs:65:17
    |
 LL |         let _ = some_vec.get_mut(0..1).unwrap().to_vec();
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/tests/ui/infinite_iter.rs b/tests/ui/infinite_iter.rs
index 1fe68897765..a1e5fad0c62 100644
--- a/tests/ui/infinite_iter.rs
+++ b/tests/ui/infinite_iter.rs
@@ -51,7 +51,6 @@ fn main() {
 
 mod finite_collect {
     use std::collections::HashSet;
-    use std::iter::FromIterator;
 
     struct C;
     impl FromIterator<i32> for C {
diff --git a/tests/ui/infinite_iter.stderr b/tests/ui/infinite_iter.stderr
index 5f5e7ac9f25..ba277e36339 100644
--- a/tests/ui/infinite_iter.stderr
+++ b/tests/ui/infinite_iter.stderr
@@ -98,7 +98,7 @@ LL |     (0..).all(|x| x == 24); // maybe infinite iter
    |     ^^^^^^^^^^^^^^^^^^^^^^
 
 error: infinite iteration detected
-  --> $DIR/infinite_iter.rs:64:31
+  --> $DIR/infinite_iter.rs:63:31
    |
 LL |         let _: HashSet<i32> = (0..).collect(); // Infinite iter
    |                               ^^^^^^^^^^^^^^^
diff --git a/tests/ui/manual_str_repeat.fixed b/tests/ui/manual_str_repeat.fixed
index dc140257f32..0704ba2f933 100644
--- a/tests/ui/manual_str_repeat.fixed
+++ b/tests/ui/manual_str_repeat.fixed
@@ -4,7 +4,7 @@
 #![warn(clippy::manual_str_repeat)]
 
 use std::borrow::Cow;
-use std::iter::{repeat, FromIterator};
+use std::iter::repeat;
 
 fn main() {
     let _: String = "test".repeat(10);
diff --git a/tests/ui/manual_str_repeat.rs b/tests/ui/manual_str_repeat.rs
index 0d69c989b2e..f522be439aa 100644
--- a/tests/ui/manual_str_repeat.rs
+++ b/tests/ui/manual_str_repeat.rs
@@ -4,7 +4,7 @@
 #![warn(clippy::manual_str_repeat)]
 
 use std::borrow::Cow;
-use std::iter::{repeat, FromIterator};
+use std::iter::repeat;
 
 fn main() {
     let _: String = std::iter::repeat("test").take(10).collect();
diff --git a/tests/ui/map_err.rs b/tests/ui/map_err.rs
index 00e037843f8..bb35ab1a14e 100644
--- a/tests/ui/map_err.rs
+++ b/tests/ui/map_err.rs
@@ -1,6 +1,5 @@
 #![warn(clippy::map_err_ignore)]
 #![allow(clippy::unnecessary_wraps)]
-use std::convert::TryFrom;
 use std::error::Error;
 use std::fmt;
 
diff --git a/tests/ui/map_err.stderr b/tests/ui/map_err.stderr
index 37e87e64de2..c035840521e 100644
--- a/tests/ui/map_err.stderr
+++ b/tests/ui/map_err.stderr
@@ -1,5 +1,5 @@
 error: `map_err(|_|...` wildcard pattern discards the original error
-  --> $DIR/map_err.rs:23:32
+  --> $DIR/map_err.rs:22:32
    |
 LL |     println!("{:?}", x.map_err(|_| Errors::Ignored));
    |                                ^^^
diff --git a/tests/ui/methods.rs b/tests/ui/methods.rs
index 977ce54327b..9805097084d 100644
--- a/tests/ui/methods.rs
+++ b/tests/ui/methods.rs
@@ -26,7 +26,6 @@ use std::collections::BTreeMap;
 use std::collections::HashMap;
 use std::collections::HashSet;
 use std::collections::VecDeque;
-use std::iter::FromIterator;
 use std::ops::Mul;
 use std::rc::{self, Rc};
 use std::sync::{self, Arc};
diff --git a/tests/ui/methods.stderr b/tests/ui/methods.stderr
index b63672dd6fd..6be38b24fbd 100644
--- a/tests/ui/methods.stderr
+++ b/tests/ui/methods.stderr
@@ -1,5 +1,5 @@
 error: methods called `new` usually return `Self`
-  --> $DIR/methods.rs:104:5
+  --> $DIR/methods.rs:103:5
    |
 LL | /     fn new() -> i32 {
 LL | |         0
@@ -9,7 +9,7 @@ LL | |     }
    = note: `-D clippy::new-ret-no-self` implied by `-D warnings`
 
 error: called `filter(..).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(..)` instead
-  --> $DIR/methods.rs:125:13
+  --> $DIR/methods.rs:124:13
    |
 LL |       let _ = v.iter().filter(|&x| {
    |  _____________^
diff --git a/tests/ui/useless_conversion_try.rs b/tests/ui/useless_conversion_try.rs
index 3787ea99144..39f54c27bee 100644
--- a/tests/ui/useless_conversion_try.rs
+++ b/tests/ui/useless_conversion_try.rs
@@ -1,7 +1,5 @@
 #![deny(clippy::useless_conversion)]
 
-use std::convert::{TryFrom, TryInto};
-
 fn test_generic<T: Copy>(val: T) -> T {
     let _ = T::try_from(val).unwrap();
     val.try_into().unwrap()
diff --git a/tests/ui/useless_conversion_try.stderr b/tests/ui/useless_conversion_try.stderr
index 2e0d9129bfb..b691c13f7db 100644
--- a/tests/ui/useless_conversion_try.stderr
+++ b/tests/ui/useless_conversion_try.stderr
@@ -1,5 +1,5 @@
 error: useless conversion to the same type: `T`
-  --> $DIR/useless_conversion_try.rs:6:13
+  --> $DIR/useless_conversion_try.rs:4:13
    |
 LL |     let _ = T::try_from(val).unwrap();
    |             ^^^^^^^^^^^^^^^^
@@ -12,7 +12,7 @@ LL | #![deny(clippy::useless_conversion)]
    = help: consider removing `T::try_from()`
 
 error: useless conversion to the same type: `T`
-  --> $DIR/useless_conversion_try.rs:7:5
+  --> $DIR/useless_conversion_try.rs:5:5
    |
 LL |     val.try_into().unwrap()
    |     ^^^^^^^^^^^^^^
@@ -20,7 +20,7 @@ LL |     val.try_into().unwrap()
    = help: consider removing `.try_into()`
 
 error: useless conversion to the same type: `std::string::String`
-  --> $DIR/useless_conversion_try.rs:29:21
+  --> $DIR/useless_conversion_try.rs:27:21
    |
 LL |     let _: String = "foo".to_string().try_into().unwrap();
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -28,7 +28,7 @@ LL |     let _: String = "foo".to_string().try_into().unwrap();
    = help: consider removing `.try_into()`
 
 error: useless conversion to the same type: `std::string::String`
-  --> $DIR/useless_conversion_try.rs:30:21
+  --> $DIR/useless_conversion_try.rs:28:21
    |
 LL |     let _: String = TryFrom::try_from("foo".to_string()).unwrap();
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -36,7 +36,7 @@ LL |     let _: String = TryFrom::try_from("foo".to_string()).unwrap();
    = help: consider removing `TryFrom::try_from()`
 
 error: useless conversion to the same type: `std::string::String`
-  --> $DIR/useless_conversion_try.rs:31:13
+  --> $DIR/useless_conversion_try.rs:29:13
    |
 LL |     let _ = String::try_from("foo".to_string()).unwrap();
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -44,7 +44,7 @@ LL |     let _ = String::try_from("foo".to_string()).unwrap();
    = help: consider removing `String::try_from()`
 
 error: useless conversion to the same type: `std::string::String`
-  --> $DIR/useless_conversion_try.rs:32:13
+  --> $DIR/useless_conversion_try.rs:30:13
    |
 LL |     let _ = String::try_from(format!("A: {:04}", 123)).unwrap();
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -52,7 +52,7 @@ LL |     let _ = String::try_from(format!("A: {:04}", 123)).unwrap();
    = help: consider removing `String::try_from()`
 
 error: useless conversion to the same type: `std::string::String`
-  --> $DIR/useless_conversion_try.rs:33:21
+  --> $DIR/useless_conversion_try.rs:31:21
    |
 LL |     let _: String = format!("Hello {}", "world").try_into().unwrap();
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -60,7 +60,7 @@ LL |     let _: String = format!("Hello {}", "world").try_into().unwrap();
    = help: consider removing `.try_into()`
 
 error: useless conversion to the same type: `std::string::String`
-  --> $DIR/useless_conversion_try.rs:34:21
+  --> $DIR/useless_conversion_try.rs:32:21
    |
 LL |     let _: String = "".to_owned().try_into().unwrap();
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^
@@ -68,7 +68,7 @@ LL |     let _: String = "".to_owned().try_into().unwrap();
    = help: consider removing `.try_into()`
 
 error: useless conversion to the same type: `std::string::String`
-  --> $DIR/useless_conversion_try.rs:35:27
+  --> $DIR/useless_conversion_try.rs:33:27
    |
 LL |     let _: String = match String::from("_").try_into() {
    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^