diff --git a/tests/ui/extra_unused_lifetimes.rs b/tests/ui/extra_unused_lifetimes.rs
index ddbf4e98c51..150acfbfee7 100644
--- a/tests/ui/extra_unused_lifetimes.rs
+++ b/tests/ui/extra_unused_lifetimes.rs
@@ -1,4 +1,10 @@
-#![allow(unused, dead_code, clippy::needless_lifetimes, clippy::needless_pass_by_value)]
+#![allow(
+    unused,
+    dead_code,
+    clippy::needless_lifetimes,
+    clippy::needless_pass_by_value,
+    clippy::needless_arbitrary_self_type
+)]
 #![warn(clippy::extra_unused_lifetimes)]
 
 fn empty() {}
diff --git a/tests/ui/extra_unused_lifetimes.stderr b/tests/ui/extra_unused_lifetimes.stderr
index 16bbb1c037d..ebdb8e74952 100644
--- a/tests/ui/extra_unused_lifetimes.stderr
+++ b/tests/ui/extra_unused_lifetimes.stderr
@@ -1,5 +1,5 @@
 error: this lifetime isn't used in the function definition
-  --> $DIR/extra_unused_lifetimes.rs:8:14
+  --> $DIR/extra_unused_lifetimes.rs:14:14
    |
 LL | fn unused_lt<'a>(x: u8) {}
    |              ^^
@@ -7,19 +7,19 @@ LL | fn unused_lt<'a>(x: u8) {}
    = note: `-D clippy::extra-unused-lifetimes` implied by `-D warnings`
 
 error: this lifetime isn't used in the function definition
-  --> $DIR/extra_unused_lifetimes.rs:10:25
+  --> $DIR/extra_unused_lifetimes.rs:16:25
    |
 LL | fn unused_lt_transitive<'a, 'b: 'a>(x: &'b u8) {
    |                         ^^
 
 error: this lifetime isn't used in the function definition
-  --> $DIR/extra_unused_lifetimes.rs:35:10
+  --> $DIR/extra_unused_lifetimes.rs:41:10
    |
 LL |     fn x<'a>(&self) {}
    |          ^^
 
 error: this lifetime isn't used in the function definition
-  --> $DIR/extra_unused_lifetimes.rs:61:22
+  --> $DIR/extra_unused_lifetimes.rs:67:22
    |
 LL |         fn unused_lt<'a>(x: u8) {}
    |                      ^^
diff --git a/tests/ui/len_without_is_empty.rs b/tests/ui/len_without_is_empty.rs
index 3ef29dd6388..b5211318a15 100644
--- a/tests/ui/len_without_is_empty.rs
+++ b/tests/ui/len_without_is_empty.rs
@@ -4,14 +4,14 @@
 pub struct PubOne;
 
 impl PubOne {
-    pub fn len(self: &Self) -> isize {
+    pub fn len(&self) -> isize {
         1
     }
 }
 
 impl PubOne {
     // A second impl for this struct -- the error span shouldn't mention this.
-    pub fn irrelevant(self: &Self) -> bool {
+    pub fn irrelevant(&self) -> bool {
         false
     }
 }
@@ -21,7 +21,7 @@ pub struct PubAllowed;
 
 #[allow(clippy::len_without_is_empty)]
 impl PubAllowed {
-    pub fn len(self: &Self) -> isize {
+    pub fn len(&self) -> isize {
         1
     }
 }
@@ -29,17 +29,17 @@ impl PubAllowed {
 // No `allow` attribute on this impl block, but that doesn't matter -- we only require one on the
 // impl containing `len`.
 impl PubAllowed {
-    pub fn irrelevant(self: &Self) -> bool {
+    pub fn irrelevant(&self) -> bool {
         false
     }
 }
 
 pub trait PubTraitsToo {
-    fn len(self: &Self) -> isize;
+    fn len(&self) -> isize;
 }
 
 impl PubTraitsToo for One {
-    fn len(self: &Self) -> isize {
+    fn len(&self) -> isize {
         0
     }
 }
@@ -47,11 +47,11 @@ impl PubTraitsToo for One {
 pub struct HasIsEmpty;
 
 impl HasIsEmpty {
-    pub fn len(self: &Self) -> isize {
+    pub fn len(&self) -> isize {
         1
     }
 
-    fn is_empty(self: &Self) -> bool {
+    fn is_empty(&self) -> bool {
         false
     }
 }
@@ -59,11 +59,11 @@ impl HasIsEmpty {
 pub struct HasWrongIsEmpty;
 
 impl HasWrongIsEmpty {
-    pub fn len(self: &Self) -> isize {
+    pub fn len(&self) -> isize {
         1
     }
 
-    pub fn is_empty(self: &Self, x: u32) -> bool {
+    pub fn is_empty(&self, x: u32) -> bool {
         false
     }
 }
@@ -71,7 +71,7 @@ impl HasWrongIsEmpty {
 struct NotPubOne;
 
 impl NotPubOne {
-    pub fn len(self: &Self) -> isize {
+    pub fn len(&self) -> isize {
         // No error; `len` is pub but `NotPubOne` is not exported anyway.
         1
     }
@@ -80,19 +80,19 @@ impl NotPubOne {
 struct One;
 
 impl One {
-    fn len(self: &Self) -> isize {
+    fn len(&self) -> isize {
         // No error; `len` is private; see issue #1085.
         1
     }
 }
 
 trait TraitsToo {
-    fn len(self: &Self) -> isize;
+    fn len(&self) -> isize;
     // No error; `len` is private; see issue #1085.
 }
 
 impl TraitsToo for One {
-    fn len(self: &Self) -> isize {
+    fn len(&self) -> isize {
         0
     }
 }
@@ -100,11 +100,11 @@ impl TraitsToo for One {
 struct HasPrivateIsEmpty;
 
 impl HasPrivateIsEmpty {
-    pub fn len(self: &Self) -> isize {
+    pub fn len(&self) -> isize {
         1
     }
 
-    fn is_empty(self: &Self) -> bool {
+    fn is_empty(&self) -> bool {
         false
     }
 }
@@ -112,16 +112,16 @@ impl HasPrivateIsEmpty {
 struct Wither;
 
 pub trait WithIsEmpty {
-    fn len(self: &Self) -> isize;
-    fn is_empty(self: &Self) -> bool;
+    fn len(&self) -> isize;
+    fn is_empty(&self) -> bool;
 }
 
 impl WithIsEmpty for Wither {
-    fn len(self: &Self) -> isize {
+    fn len(&self) -> isize {
         1
     }
 
-    fn is_empty(self: &Self) -> bool {
+    fn is_empty(&self) -> bool {
         false
     }
 }
diff --git a/tests/ui/len_without_is_empty.stderr b/tests/ui/len_without_is_empty.stderr
index 4493b17a4b4..d79c300c074 100644
--- a/tests/ui/len_without_is_empty.stderr
+++ b/tests/ui/len_without_is_empty.stderr
@@ -2,7 +2,7 @@ error: item `PubOne` has a public `len` method but no corresponding `is_empty` m
   --> $DIR/len_without_is_empty.rs:6:1
    |
 LL | / impl PubOne {
-LL | |     pub fn len(self: &Self) -> isize {
+LL | |     pub fn len(&self) -> isize {
 LL | |         1
 LL | |     }
 LL | | }
@@ -14,7 +14,7 @@ error: trait `PubTraitsToo` has a `len` method but no (possibly inherited) `is_e
   --> $DIR/len_without_is_empty.rs:37:1
    |
 LL | / pub trait PubTraitsToo {
-LL | |     fn len(self: &Self) -> isize;
+LL | |     fn len(&self) -> isize;
 LL | | }
    | |_^
 
@@ -22,7 +22,7 @@ error: item `HasIsEmpty` has a public `len` method but a private `is_empty` meth
   --> $DIR/len_without_is_empty.rs:49:1
    |
 LL | / impl HasIsEmpty {
-LL | |     pub fn len(self: &Self) -> isize {
+LL | |     pub fn len(&self) -> isize {
 LL | |         1
 LL | |     }
 ...  |
@@ -34,7 +34,7 @@ error: item `HasWrongIsEmpty` has a public `len` method but no corresponding `is
   --> $DIR/len_without_is_empty.rs:61:1
    |
 LL | / impl HasWrongIsEmpty {
-LL | |     pub fn len(self: &Self) -> isize {
+LL | |     pub fn len(&self) -> isize {
 LL | |         1
 LL | |     }
 ...  |
diff --git a/tests/ui/len_zero.fixed b/tests/ui/len_zero.fixed
index a29b832eb60..d81676a3d9f 100644
--- a/tests/ui/len_zero.fixed
+++ b/tests/ui/len_zero.fixed
@@ -7,12 +7,12 @@ pub struct One;
 struct Wither;
 
 trait TraitsToo {
-    fn len(self: &Self) -> isize;
+    fn len(&self) -> isize;
     // No error; `len` is private; see issue #1085.
 }
 
 impl TraitsToo for One {
-    fn len(self: &Self) -> isize {
+    fn len(&self) -> isize {
         0
     }
 }
@@ -20,11 +20,11 @@ impl TraitsToo for One {
 pub struct HasIsEmpty;
 
 impl HasIsEmpty {
-    pub fn len(self: &Self) -> isize {
+    pub fn len(&self) -> isize {
         1
     }
 
-    fn is_empty(self: &Self) -> bool {
+    fn is_empty(&self) -> bool {
         false
     }
 }
@@ -32,26 +32,26 @@ impl HasIsEmpty {
 pub struct HasWrongIsEmpty;
 
 impl HasWrongIsEmpty {
-    pub fn len(self: &Self) -> isize {
+    pub fn len(&self) -> isize {
         1
     }
 
-    pub fn is_empty(self: &Self, x: u32) -> bool {
+    pub fn is_empty(&self, x: u32) -> bool {
         false
     }
 }
 
 pub trait WithIsEmpty {
-    fn len(self: &Self) -> isize;
-    fn is_empty(self: &Self) -> bool;
+    fn len(&self) -> isize;
+    fn is_empty(&self) -> bool;
 }
 
 impl WithIsEmpty for Wither {
-    fn len(self: &Self) -> isize {
+    fn len(&self) -> isize {
         1
     }
 
-    fn is_empty(self: &Self) -> bool {
+    fn is_empty(&self) -> bool {
         false
     }
 }
diff --git a/tests/ui/len_zero.rs b/tests/ui/len_zero.rs
index 8fd0093f4fd..ecdba921a5d 100644
--- a/tests/ui/len_zero.rs
+++ b/tests/ui/len_zero.rs
@@ -7,12 +7,12 @@ pub struct One;
 struct Wither;
 
 trait TraitsToo {
-    fn len(self: &Self) -> isize;
+    fn len(&self) -> isize;
     // No error; `len` is private; see issue #1085.
 }
 
 impl TraitsToo for One {
-    fn len(self: &Self) -> isize {
+    fn len(&self) -> isize {
         0
     }
 }
@@ -20,11 +20,11 @@ impl TraitsToo for One {
 pub struct HasIsEmpty;
 
 impl HasIsEmpty {
-    pub fn len(self: &Self) -> isize {
+    pub fn len(&self) -> isize {
         1
     }
 
-    fn is_empty(self: &Self) -> bool {
+    fn is_empty(&self) -> bool {
         false
     }
 }
@@ -32,26 +32,26 @@ impl HasIsEmpty {
 pub struct HasWrongIsEmpty;
 
 impl HasWrongIsEmpty {
-    pub fn len(self: &Self) -> isize {
+    pub fn len(&self) -> isize {
         1
     }
 
-    pub fn is_empty(self: &Self, x: u32) -> bool {
+    pub fn is_empty(&self, x: u32) -> bool {
         false
     }
 }
 
 pub trait WithIsEmpty {
-    fn len(self: &Self) -> isize;
-    fn is_empty(self: &Self) -> bool;
+    fn len(&self) -> isize;
+    fn is_empty(&self) -> bool;
 }
 
 impl WithIsEmpty for Wither {
-    fn len(self: &Self) -> isize {
+    fn len(&self) -> isize {
         1
     }
 
-    fn is_empty(self: &Self) -> bool {
+    fn is_empty(&self) -> bool {
         false
     }
 }
diff --git a/tests/ui/needless_arbitrary_self_type.fixed b/tests/ui/needless_arbitrary_self_type.fixed
new file mode 100644
index 00000000000..642e48fd131
--- /dev/null
+++ b/tests/ui/needless_arbitrary_self_type.fixed
@@ -0,0 +1,61 @@
+// run-rustfix
+
+#![warn(clippy::needless_arbitrary_self_type)]
+#![allow(unused_mut, clippy::needless_lifetimes)]
+
+pub enum ValType {
+    A,
+    B,
+}
+
+impl ValType {
+    pub fn bad(self) {
+        unimplemented!();
+    }
+
+    pub fn good(self) {
+        unimplemented!();
+    }
+
+    pub fn mut_bad(mut self) {
+        unimplemented!();
+    }
+
+    pub fn mut_good(mut self) {
+        unimplemented!();
+    }
+
+    pub fn ref_bad(&self) {
+        unimplemented!();
+    }
+
+    pub fn ref_bad_with_lifetime<'a>(&'a self) {
+        unimplemented!();
+    }
+
+    pub fn ref_good(&self) {
+        unimplemented!();
+    }
+
+    pub fn mut_ref_bad(&mut self) {
+        unimplemented!();
+    }
+
+    pub fn mut_ref_bad_with_lifetime<'a>(&'a mut self) {
+        unimplemented!();
+    }
+
+    pub fn mut_ref_good(&mut self) {
+        unimplemented!();
+    }
+
+    pub fn mut_ref_mut_bad(&mut self) {
+        unimplemented!();
+    }
+
+    pub fn mut_ref_mut_ref_good(self: &&mut &mut Self) {
+        unimplemented!();
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/needless_arbitrary_self_type.rs b/tests/ui/needless_arbitrary_self_type.rs
index da4bbcf4a7d..178abc341a8 100644
--- a/tests/ui/needless_arbitrary_self_type.rs
+++ b/tests/ui/needless_arbitrary_self_type.rs
@@ -1,4 +1,7 @@
+// run-rustfix
+
 #![warn(clippy::needless_arbitrary_self_type)]
+#![allow(unused_mut, clippy::needless_lifetimes)]
 
 pub enum ValType {
     A,
diff --git a/tests/ui/needless_arbitrary_self_type.stderr b/tests/ui/needless_arbitrary_self_type.stderr
index ee803b24071..fc21d3d0afd 100644
--- a/tests/ui/needless_arbitrary_self_type.stderr
+++ b/tests/ui/needless_arbitrary_self_type.stderr
@@ -1,5 +1,5 @@
 error: the type of the `self` parameter is arbitrary
-  --> $DIR/needless_arbitrary_self_type.rs:9:16
+  --> $DIR/needless_arbitrary_self_type.rs:12:16
    |
 LL |     pub fn bad(self: Self) {
    |                ^^^^^^^^^^ help: consider to change this parameter to: `self`
@@ -7,37 +7,37 @@ LL |     pub fn bad(self: Self) {
    = note: `-D clippy::needless-arbitrary-self-type` implied by `-D warnings`
 
 error: the type of the `self` parameter is arbitrary
-  --> $DIR/needless_arbitrary_self_type.rs:17:20
+  --> $DIR/needless_arbitrary_self_type.rs:20:20
    |
 LL |     pub fn mut_bad(mut self: Self) {
    |                    ^^^^^^^^^^^^^^ help: consider to change this parameter to: `mut self`
 
 error: the type of the `self` parameter is arbitrary
-  --> $DIR/needless_arbitrary_self_type.rs:25:20
+  --> $DIR/needless_arbitrary_self_type.rs:28:20
    |
 LL |     pub fn ref_bad(self: &Self) {
    |                    ^^^^^^^^^^^ help: consider to change this parameter to: `&self`
 
 error: the type of the `self` parameter is arbitrary
-  --> $DIR/needless_arbitrary_self_type.rs:29:38
+  --> $DIR/needless_arbitrary_self_type.rs:32:38
    |
 LL |     pub fn ref_bad_with_lifetime<'a>(self: &'a Self) {
    |                                      ^^^^^^^^^^^^^^ help: consider to change this parameter to: `&'a self`
 
 error: the type of the `self` parameter is arbitrary
-  --> $DIR/needless_arbitrary_self_type.rs:37:24
+  --> $DIR/needless_arbitrary_self_type.rs:40:24
    |
 LL |     pub fn mut_ref_bad(self: &mut Self) {
    |                        ^^^^^^^^^^^^^^^ help: consider to change this parameter to: `&mut self`
 
 error: the type of the `self` parameter is arbitrary
-  --> $DIR/needless_arbitrary_self_type.rs:41:42
+  --> $DIR/needless_arbitrary_self_type.rs:44:42
    |
 LL |     pub fn mut_ref_bad_with_lifetime<'a>(self: &'a mut Self) {
    |                                          ^^^^^^^^^^^^^^^^^^ help: consider to change this parameter to: `&'a mut self`
 
 error: the type of the `self` parameter is arbitrary
-  --> $DIR/needless_arbitrary_self_type.rs:49:28
+  --> $DIR/needless_arbitrary_self_type.rs:52:28
    |
 LL |     pub fn mut_ref_mut_bad(mut self: &mut Self) {
    |                            ^^^^^^^^^^^^^^^^^^^ help: consider to change this parameter to: `&mut self`
diff --git a/tests/ui/option_map_unit_fn_fixable.fixed b/tests/ui/option_map_unit_fn_fixable.fixed
index 9a0da404cb6..96d1c54946c 100644
--- a/tests/ui/option_map_unit_fn_fixable.fixed
+++ b/tests/ui/option_map_unit_fn_fixable.fixed
@@ -22,9 +22,9 @@ struct HasOption {
 }
 
 impl HasOption {
-    fn do_option_nothing(self: &Self, value: usize) {}
+    fn do_option_nothing(&self, value: usize) {}
 
-    fn do_option_plus_one(self: &Self, value: usize) -> usize {
+    fn do_option_plus_one(&self, value: usize) -> usize {
         value + 1
     }
 }
diff --git a/tests/ui/option_map_unit_fn_fixable.rs b/tests/ui/option_map_unit_fn_fixable.rs
index 58041b62df3..931ffc18665 100644
--- a/tests/ui/option_map_unit_fn_fixable.rs
+++ b/tests/ui/option_map_unit_fn_fixable.rs
@@ -22,9 +22,9 @@ struct HasOption {
 }
 
 impl HasOption {
-    fn do_option_nothing(self: &Self, value: usize) {}
+    fn do_option_nothing(&self, value: usize) {}
 
-    fn do_option_plus_one(self: &Self, value: usize) -> usize {
+    fn do_option_plus_one(&self, value: usize) -> usize {
         value + 1
     }
 }
diff --git a/tests/ui/result_map_unit_fn_fixable.fixed b/tests/ui/result_map_unit_fn_fixable.fixed
index 1d0a3ecd0ff..631042c616b 100644
--- a/tests/ui/result_map_unit_fn_fixable.fixed
+++ b/tests/ui/result_map_unit_fn_fixable.fixed
@@ -18,9 +18,9 @@ struct HasResult {
 }
 
 impl HasResult {
-    fn do_result_nothing(self: &Self, value: usize) {}
+    fn do_result_nothing(&self, value: usize) {}
 
-    fn do_result_plus_one(self: &Self, value: usize) -> usize {
+    fn do_result_plus_one(&self, value: usize) -> usize {
         value + 1
     }
 }
diff --git a/tests/ui/result_map_unit_fn_fixable.rs b/tests/ui/result_map_unit_fn_fixable.rs
index 2fe18f923f0..679eb232626 100644
--- a/tests/ui/result_map_unit_fn_fixable.rs
+++ b/tests/ui/result_map_unit_fn_fixable.rs
@@ -18,9 +18,9 @@ struct HasResult {
 }
 
 impl HasResult {
-    fn do_result_nothing(self: &Self, value: usize) {}
+    fn do_result_nothing(&self, value: usize) {}
 
-    fn do_result_plus_one(self: &Self, value: usize) -> usize {
+    fn do_result_plus_one(&self, value: usize) -> usize {
         value + 1
     }
 }