diff --git a/src/test/ui/unsized-locals/unsized-exprs.rs b/src/test/ui/unsized-locals/unsized-exprs.rs
index 17fcdf7ea27..1729b9ffa86 100644
--- a/src/test/ui/unsized-locals/unsized-exprs.rs
+++ b/src/test/ui/unsized-locals/unsized-exprs.rs
@@ -1,5 +1,4 @@
-#![feature(unsized_tuple_coercion, unsized_locals, unsized_fn_params)]
-//~^ WARN the feature `unsized_locals` is incomplete
+#![feature(unsized_tuple_coercion, unsized_fn_params)]
 
 struct A<X: ?Sized>(X);
 
diff --git a/src/test/ui/unsized-locals/unsized-exprs.stderr b/src/test/ui/unsized-locals/unsized-exprs.stderr
index 493a5425e5d..9fb401aec2c 100644
--- a/src/test/ui/unsized-locals/unsized-exprs.stderr
+++ b/src/test/ui/unsized-locals/unsized-exprs.stderr
@@ -1,14 +1,5 @@
-warning: the feature `unsized_locals` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/unsized-exprs.rs:1:36
-   |
-LL | #![feature(unsized_tuple_coercion, unsized_locals, unsized_fn_params)]
-   |                                    ^^^^^^^^^^^^^^
-   |
-   = note: `#[warn(incomplete_features)]` on by default
-   = note: see issue #48055 <https://github.com/rust-lang/rust/issues/48055> for more information
-
 error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
-  --> $DIR/unsized-exprs.rs:23:26
+  --> $DIR/unsized-exprs.rs:22:26
    |
 LL |     udrop::<(i32, [u8])>((42, *foo()));
    |                          ^^^^^^^^^^^^ doesn't have a size known at compile-time
@@ -18,7 +9,7 @@ LL |     udrop::<(i32, [u8])>((42, *foo()));
    = note: tuples must have a statically known size to be initialized
 
 error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
-  --> $DIR/unsized-exprs.rs:25:22
+  --> $DIR/unsized-exprs.rs:24:22
    |
 LL |     udrop::<A<[u8]>>(A { 0: *foo() });
    |                      ^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
@@ -28,7 +19,7 @@ LL |     udrop::<A<[u8]>>(A { 0: *foo() });
    = note: structs must have a statically known size to be initialized
 
 error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
-  --> $DIR/unsized-exprs.rs:27:22
+  --> $DIR/unsized-exprs.rs:26:22
    |
 LL |     udrop::<A<[u8]>>(A(*foo()));
    |                      ^ doesn't have a size known at compile-time
@@ -37,6 +28,6 @@ LL |     udrop::<A<[u8]>>(A(*foo()));
    = note: required because it appears within the type `A<[u8]>`
    = note: the return type of a function must have a statically known size
 
-error: aborting due to 3 previous errors; 1 warning emitted
+error: aborting due to 3 previous errors
 
 For more information about this error, try `rustc --explain E0277`.
diff --git a/src/test/ui/unsized-locals/unsized-exprs2.rs b/src/test/ui/unsized-locals/unsized-exprs2.rs
index 8b0232e5b0f..127d8717e58 100644
--- a/src/test/ui/unsized-locals/unsized-exprs2.rs
+++ b/src/test/ui/unsized-locals/unsized-exprs2.rs
@@ -1,5 +1,4 @@
-#![feature(unsized_tuple_coercion, unsized_locals, unsized_fn_params)]
-//~^ WARN the feature `unsized_locals` is incomplete
+#![feature(unsized_tuple_coercion, unsized_fn_params)]
 
 struct A<X: ?Sized>(X);
 
diff --git a/src/test/ui/unsized-locals/unsized-exprs2.stderr b/src/test/ui/unsized-locals/unsized-exprs2.stderr
index fac16b8e07e..88269f237af 100644
--- a/src/test/ui/unsized-locals/unsized-exprs2.stderr
+++ b/src/test/ui/unsized-locals/unsized-exprs2.stderr
@@ -1,14 +1,5 @@
-warning: the feature `unsized_locals` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/unsized-exprs2.rs:1:36
-   |
-LL | #![feature(unsized_tuple_coercion, unsized_locals, unsized_fn_params)]
-   |                                    ^^^^^^^^^^^^^^
-   |
-   = note: `#[warn(incomplete_features)]` on by default
-   = note: see issue #48055 <https://github.com/rust-lang/rust/issues/48055> for more information
-
 error[E0508]: cannot move out of type `[u8]`, a non-copy slice
-  --> $DIR/unsized-exprs2.rs:23:5
+  --> $DIR/unsized-exprs2.rs:22:5
    |
 LL |     udrop::<[u8]>(foo()[..]);
    |     ^^^^^^^^^^^^^^^^^^^^^^^^
@@ -16,6 +7,6 @@ LL |     udrop::<[u8]>(foo()[..]);
    |     cannot move out of here
    |     move occurs because value has type `[u8]`, which does not implement the `Copy` trait
 
-error: aborting due to previous error; 1 warning emitted
+error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0508`.
diff --git a/src/test/ui/unsized-locals/unsized-index.rs b/src/test/ui/unsized-locals/unsized-index.rs
index c8b502b271d..2c31ade7a38 100644
--- a/src/test/ui/unsized-locals/unsized-index.rs
+++ b/src/test/ui/unsized-locals/unsized-index.rs
@@ -5,8 +5,7 @@
 // Tightening the bound now could be a breaking change. Although no crater
 // regression were observed (https://github.com/rust-lang/rust/pull/59527),
 // let's be conservative and just add a test for this.
-#![allow(incomplete_features)]
-#![feature(unsized_locals, unsized_fn_params)]
+#![feature(unsized_fn_params)]
 
 use std::ops;