diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs
index 917d9d36076..22d23a17509 100644
--- a/clippy_lints/src/lib.rs
+++ b/clippy_lints/src/lib.rs
@@ -5,7 +5,6 @@
 #![feature(f128)]
 #![feature(f16)]
 #![feature(if_let_guard)]
-#![feature(is_sorted)]
 #![feature(iter_intersperse)]
 #![feature(iter_partition_in_place)]
 #![feature(let_chains)]
diff --git a/tests/compile-test.rs b/tests/compile-test.rs
index ea3a0a93ecc..4e5120406b0 100644
--- a/tests/compile-test.rs
+++ b/tests/compile-test.rs
@@ -1,4 +1,3 @@
-#![feature(is_sorted)]
 #![cfg_attr(feature = "deny-warnings", deny(warnings))]
 #![warn(rust_2018_idioms, unused_lifetimes)]
 #![allow(unused_extern_crates)]
diff --git a/tests/ui/unit_return_expecting_ord.rs b/tests/ui/unit_return_expecting_ord.rs
index 59b2f7e355b..5f62157dd6d 100644
--- a/tests/ui/unit_return_expecting_ord.rs
+++ b/tests/ui/unit_return_expecting_ord.rs
@@ -2,7 +2,6 @@
 #![allow(clippy::needless_return)]
 #![allow(clippy::unused_unit)]
 #![allow(clippy::useless_vec)]
-#![feature(is_sorted)]
 
 struct Struct {
     field: isize,
diff --git a/tests/ui/unit_return_expecting_ord.stderr b/tests/ui/unit_return_expecting_ord.stderr
index b2fc8857015..329832048e8 100644
--- a/tests/ui/unit_return_expecting_ord.stderr
+++ b/tests/ui/unit_return_expecting_ord.stderr
@@ -1,11 +1,11 @@
 error: this closure returns the unit type which also implements Ord
-  --> tests/ui/unit_return_expecting_ord.rs:19:25
+  --> tests/ui/unit_return_expecting_ord.rs:18:25
    |
 LL |     structs.sort_by_key(|s| {
    |                         ^^^
    |
 help: probably caused by this trailing semicolon
-  --> tests/ui/unit_return_expecting_ord.rs:21:24
+  --> tests/ui/unit_return_expecting_ord.rs:20:24
    |
 LL |         double(s.field);
    |                        ^
@@ -13,25 +13,25 @@ LL |         double(s.field);
    = help: to override `-D warnings` add `#[allow(clippy::unit_return_expecting_ord)]`
 
 error: this closure returns the unit type which also implements PartialOrd
-  --> tests/ui/unit_return_expecting_ord.rs:24:30
+  --> tests/ui/unit_return_expecting_ord.rs:23:30
    |
 LL |     structs.is_sorted_by_key(|s| {
    |                              ^^^
    |
 help: probably caused by this trailing semicolon
-  --> tests/ui/unit_return_expecting_ord.rs:26:24
+  --> tests/ui/unit_return_expecting_ord.rs:25:24
    |
 LL |         double(s.field);
    |                        ^
 
 error: this closure returns the unit type which also implements PartialOrd
-  --> tests/ui/unit_return_expecting_ord.rs:28:30
+  --> tests/ui/unit_return_expecting_ord.rs:27:30
    |
 LL |     structs.is_sorted_by_key(|s| {
    |                              ^^^
 
 error: this closure returns the unit type which also implements Ord
-  --> tests/ui/unit_return_expecting_ord.rs:39:25
+  --> tests/ui/unit_return_expecting_ord.rs:38:25
    |
 LL |     structs.sort_by_key(|s| unit(s.field));
    |                         ^^^