diff --git a/tests/ui/auto-traits/suspicious-impls-lint.rs b/tests/ui/auto-traits/suspicious-impls-lint.rs
index 86ee2fd6703..7712e84f4a2 100644
--- a/tests/ui/auto-traits/suspicious-impls-lint.rs
+++ b/tests/ui/auto-traits/suspicious-impls-lint.rs
@@ -1,4 +1,3 @@
-#![feature(negative_impls)]
 #![deny(suspicious_auto_trait_impls)]
 
 use std::marker::PhantomData;
@@ -22,9 +21,6 @@ struct ContainsVec<T>(Vec<T>);
 unsafe impl Send for ContainsVec<i32> {}
 //~^ ERROR
 //~| WARNING this will change its meaning
-impl !Send for ContainsVec<u32> {}
-//~^ ERROR
-//~| WARNING this will change its meaning
 
 struct TwoParams<T, U>(T, U);
 unsafe impl<T: Send, U: Send> Send for TwoParams<T, U> {} // ok
@@ -44,17 +40,11 @@ pub struct WithPhantomDataSend<T, U>(PhantomData<T>, U);
 unsafe impl<T> Send for WithPhantomDataSend<*const T, i8> {}
 //~^ ERROR
 //~| WARNING this will change its meaning
-impl<T> !Send for WithPhantomDataSend<*const T, u8> {}
-//~^ ERROR
-//~| WARNING this will change its meaning
 
 pub struct WithLifetime<'a, T>(&'a (), T);
 unsafe impl<T> Send for WithLifetime<'static, T> {} // ok
 unsafe impl<T> Sync for WithLifetime<'static, Vec<T>> {}
 //~^ ERROR
 //~| WARNING this will change its meaning
-impl<T> !Sync for WithLifetime<'static, Option<T>> {}
-//~^ ERROR
-//~| WARNING this will change its meaning
 
 fn main() {}
diff --git a/tests/ui/auto-traits/suspicious-impls-lint.stderr b/tests/ui/auto-traits/suspicious-impls-lint.stderr
index d4e7fe636e6..9cd4e79f851 100644
--- a/tests/ui/auto-traits/suspicious-impls-lint.stderr
+++ b/tests/ui/auto-traits/suspicious-impls-lint.stderr
@@ -1,5 +1,5 @@
 error: cross-crate traits with a default impl, like `Send`, should not be specialized
-  --> $DIR/suspicious-impls-lint.rs:10:1
+  --> $DIR/suspicious-impls-lint.rs:9:1
    |
 LL | unsafe impl<T: Send> Send for MayImplementSendErr<&T> {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -8,18 +8,18 @@ LL | unsafe impl<T: Send> Send for MayImplementSendErr<&T> {}
    = note: for more information, see issue #93367 <https://github.com/rust-lang/rust/issues/93367>
    = note: `&T` is not a generic parameter
 note: try using the same sequence of generic parameters as the struct definition
-  --> $DIR/suspicious-impls-lint.rs:9:1
+  --> $DIR/suspicious-impls-lint.rs:8:1
    |
 LL | struct MayImplementSendErr<T>(T);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 note: the lint level is defined here
-  --> $DIR/suspicious-impls-lint.rs:2:9
+  --> $DIR/suspicious-impls-lint.rs:1:9
    |
 LL | #![deny(suspicious_auto_trait_impls)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: cross-crate traits with a default impl, like `Send`, should not be specialized
-  --> $DIR/suspicious-impls-lint.rs:22:1
+  --> $DIR/suspicious-impls-lint.rs:21:1
    |
 LL | unsafe impl Send for ContainsVec<i32> {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -28,28 +28,13 @@ LL | unsafe impl Send for ContainsVec<i32> {}
    = note: for more information, see issue #93367 <https://github.com/rust-lang/rust/issues/93367>
    = note: `i32` is not a generic parameter
 note: try using the same sequence of generic parameters as the struct definition
-  --> $DIR/suspicious-impls-lint.rs:21:1
+  --> $DIR/suspicious-impls-lint.rs:20:1
    |
 LL | struct ContainsVec<T>(Vec<T>);
    | ^^^^^^^^^^^^^^^^^^^^^
 
 error: cross-crate traits with a default impl, like `Send`, should not be specialized
-  --> $DIR/suspicious-impls-lint.rs:25:1
-   |
-LL | impl !Send for ContainsVec<u32> {}
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = warning: this will change its meaning in a future release!
-   = note: for more information, see issue #93367 <https://github.com/rust-lang/rust/issues/93367>
-   = note: `u32` is not a generic parameter
-note: try using the same sequence of generic parameters as the struct definition
-  --> $DIR/suspicious-impls-lint.rs:21:1
-   |
-LL | struct ContainsVec<T>(Vec<T>);
-   | ^^^^^^^^^^^^^^^^^^^^^
-
-error: cross-crate traits with a default impl, like `Send`, should not be specialized
-  --> $DIR/suspicious-impls-lint.rs:36:1
+  --> $DIR/suspicious-impls-lint.rs:32:1
    |
 LL | unsafe impl<T: Send> Send for TwoParamsSame<T, T> {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -58,13 +43,13 @@ LL | unsafe impl<T: Send> Send for TwoParamsSame<T, T> {}
    = note: for more information, see issue #93367 <https://github.com/rust-lang/rust/issues/93367>
    = note: `T` is mentioned multiple times
 note: try using the same sequence of generic parameters as the struct definition
-  --> $DIR/suspicious-impls-lint.rs:35:1
+  --> $DIR/suspicious-impls-lint.rs:31:1
    |
 LL | struct TwoParamsSame<T, U>(T, U);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: cross-crate traits with a default impl, like `Send`, should not be specialized
-  --> $DIR/suspicious-impls-lint.rs:44:1
+  --> $DIR/suspicious-impls-lint.rs:40:1
    |
 LL | unsafe impl<T> Send for WithPhantomDataSend<*const T, i8> {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -73,28 +58,13 @@ LL | unsafe impl<T> Send for WithPhantomDataSend<*const T, i8> {}
    = note: for more information, see issue #93367 <https://github.com/rust-lang/rust/issues/93367>
    = note: `*const T` is not a generic parameter
 note: try using the same sequence of generic parameters as the struct definition
-  --> $DIR/suspicious-impls-lint.rs:43:1
-   |
-LL | pub struct WithPhantomDataSend<T, U>(PhantomData<T>, U);
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-error: cross-crate traits with a default impl, like `Send`, should not be specialized
-  --> $DIR/suspicious-impls-lint.rs:47:1
-   |
-LL | impl<T> !Send for WithPhantomDataSend<*const T, u8> {}
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = warning: this will change its meaning in a future release!
-   = note: for more information, see issue #93367 <https://github.com/rust-lang/rust/issues/93367>
-   = note: `*const T` is not a generic parameter
-note: try using the same sequence of generic parameters as the struct definition
-  --> $DIR/suspicious-impls-lint.rs:43:1
+  --> $DIR/suspicious-impls-lint.rs:39:1
    |
 LL | pub struct WithPhantomDataSend<T, U>(PhantomData<T>, U);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: cross-crate traits with a default impl, like `Sync`, should not be specialized
-  --> $DIR/suspicious-impls-lint.rs:53:1
+  --> $DIR/suspicious-impls-lint.rs:46:1
    |
 LL | unsafe impl<T> Sync for WithLifetime<'static, Vec<T>> {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -103,25 +73,10 @@ LL | unsafe impl<T> Sync for WithLifetime<'static, Vec<T>> {}
    = note: for more information, see issue #93367 <https://github.com/rust-lang/rust/issues/93367>
    = note: `Vec<T>` is not a generic parameter
 note: try using the same sequence of generic parameters as the struct definition
-  --> $DIR/suspicious-impls-lint.rs:51:1
+  --> $DIR/suspicious-impls-lint.rs:44:1
    |
 LL | pub struct WithLifetime<'a, T>(&'a (), T);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: cross-crate traits with a default impl, like `Sync`, should not be specialized
-  --> $DIR/suspicious-impls-lint.rs:56:1
-   |
-LL | impl<T> !Sync for WithLifetime<'static, Option<T>> {}
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = warning: this will change its meaning in a future release!
-   = note: for more information, see issue #93367 <https://github.com/rust-lang/rust/issues/93367>
-   = note: `Option<T>` is not a generic parameter
-note: try using the same sequence of generic parameters as the struct definition
-  --> $DIR/suspicious-impls-lint.rs:51:1
-   |
-LL | pub struct WithLifetime<'a, T>(&'a (), T);
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-error: aborting due to 8 previous errors
+error: aborting due to 5 previous errors
 
diff --git a/tests/ui/auto-traits/suspicious-negative-impls-lint.rs b/tests/ui/auto-traits/suspicious-negative-impls-lint.rs
new file mode 100644
index 00000000000..34842e5944b
--- /dev/null
+++ b/tests/ui/auto-traits/suspicious-negative-impls-lint.rs
@@ -0,0 +1,21 @@
+#![feature(negative_impls)]
+#![deny(suspicious_auto_trait_impls)]
+
+use std::marker::PhantomData;
+
+struct ContainsVec<T>(Vec<T>);
+impl !Send for ContainsVec<u32> {}
+//~^ ERROR
+//~| WARNING this will change its meaning
+
+pub struct WithPhantomDataSend<T, U>(PhantomData<T>, U);
+impl<T> !Send for WithPhantomDataSend<*const T, u8> {}
+//~^ ERROR
+//~| WARNING this will change its meaning
+
+pub struct WithLifetime<'a, T>(&'a (), T);
+impl<T> !Sync for WithLifetime<'static, Option<T>> {}
+//~^ ERROR
+//~| WARNING this will change its meaning
+
+fn main() {}
diff --git a/tests/ui/auto-traits/suspicious-negative-impls-lint.stderr b/tests/ui/auto-traits/suspicious-negative-impls-lint.stderr
new file mode 100644
index 00000000000..14785b98a17
--- /dev/null
+++ b/tests/ui/auto-traits/suspicious-negative-impls-lint.stderr
@@ -0,0 +1,82 @@
+error: cross-crate traits with a default impl, like `Send`, should not be specialized
+  --> $DIR/suspicious-negative-impls-lint.rs:7:1
+   |
+LL | impl !Send for ContainsVec<u32> {}
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this will change its meaning in a future release!
+   = note: for more information, see issue #93367 <https://github.com/rust-lang/rust/issues/93367>
+   = note: `u32` is not a generic parameter
+note: try using the same sequence of generic parameters as the struct definition
+  --> $DIR/suspicious-negative-impls-lint.rs:6:1
+   |
+LL | struct ContainsVec<T>(Vec<T>);
+   | ^^^^^^^^^^^^^^^^^^^^^
+note: the lint level is defined here
+  --> $DIR/suspicious-negative-impls-lint.rs:2:9
+   |
+LL | #![deny(suspicious_auto_trait_impls)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: cross-crate traits with a default impl, like `Send`, should not be specialized
+  --> $DIR/suspicious-negative-impls-lint.rs:12:1
+   |
+LL | unsafe impl<T> Send for WithPhantomDataSend<*const T, i8> {}
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this will change its meaning in a future release!
+   = note: for more information, see issue #93367 <https://github.com/rust-lang/rust/issues/93367>
+   = note: `*const T` is not a generic parameter
+note: try using the same sequence of generic parameters as the struct definition
+  --> $DIR/suspicious-negative-impls-lint.rs:11:1
+   |
+LL | pub struct WithPhantomDataSend<T, U>(PhantomData<T>, U);
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: cross-crate traits with a default impl, like `Send`, should not be specialized
+  --> $DIR/suspicious-negative-impls-lint.rs:15:1
+   |
+LL | impl<T> !Send for WithPhantomDataSend<*const T, u8> {}
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this will change its meaning in a future release!
+   = note: for more information, see issue #93367 <https://github.com/rust-lang/rust/issues/93367>
+   = note: `*const T` is not a generic parameter
+note: try using the same sequence of generic parameters as the struct definition
+  --> $DIR/suspicious-negative-impls-lint.rs:11:1
+   |
+LL | pub struct WithPhantomDataSend<T, U>(PhantomData<T>, U);
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: cross-crate traits with a default impl, like `Sync`, should not be specialized
+  --> $DIR/suspicious-negative-impls-lint.rs:21:1
+   |
+LL | unsafe impl<T> Sync for WithLifetime<'static, Vec<T>> {}
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this will change its meaning in a future release!
+   = note: for more information, see issue #93367 <https://github.com/rust-lang/rust/issues/93367>
+   = note: `Vec<T>` is not a generic parameter
+note: try using the same sequence of generic parameters as the struct definition
+  --> $DIR/suspicious-negative-impls-lint.rs:19:1
+   |
+LL | pub struct WithLifetime<'a, T>(&'a (), T);
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: cross-crate traits with a default impl, like `Sync`, should not be specialized
+  --> $DIR/suspicious-negative-impls-lint.rs:24:1
+   |
+LL | impl<T> !Sync for WithLifetime<'static, Option<T>> {}
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this will change its meaning in a future release!
+   = note: for more information, see issue #93367 <https://github.com/rust-lang/rust/issues/93367>
+   = note: `Option<T>` is not a generic parameter
+note: try using the same sequence of generic parameters as the struct definition
+  --> $DIR/suspicious-negative-impls-lint.rs:19:1
+   |
+LL | pub struct WithLifetime<'a, T>(&'a (), T);
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to 5 previous errors
+