diff --git a/tests/ui/layout/aggregate-lang/struct-align.rs b/tests/ui/layout/aggregate-lang/struct-align.rs
index 931d686798daa..f3b88a6d85d3e 100644
--- a/tests/ui/layout/aggregate-lang/struct-align.rs
+++ b/tests/ui/layout/aggregate-lang/struct-align.rs
@@ -16,7 +16,6 @@ struct ReprRustStruct {
     b: Overaligned,
 }
 
-#[cfg_attr(test, test)]
 fn test_alignment_contains_all_fields() {
     assert!(core::mem::align_of::<ReprRustStruct>() >= core::mem::align_of::<i32>());
     assert!(core::mem::align_of::<ReprRustStruct>() >= core::mem::align_of::<[u32; 4]>());
@@ -25,7 +24,6 @@ fn test_alignment_contains_all_fields() {
     assert!(core::mem::align_of::<ReprRustStruct>() >= core::mem::align_of::<Overaligned>());
 }
 
-#[cfg(not(test))]
 fn main() {
     test_alignment_contains_all_fields();
 }
diff --git a/tests/ui/layout/aggregate-lang/struct-offsets.rs b/tests/ui/layout/aggregate-lang/struct-offsets.rs
index 62e16e6d8434e..ca199bdfeb104 100644
--- a/tests/ui/layout/aggregate-lang/struct-offsets.rs
+++ b/tests/ui/layout/aggregate-lang/struct-offsets.rs
@@ -36,7 +36,6 @@ fn test_non_overlapping(a: &(usize, usize), b: &(usize, usize)) {
     assert!((a.1 <= b.0) || (b.1 <= a.0));
 }
 
-#[cfg_attr(test, test)]
 fn test_fields_non_overlapping() {
     let fields = [
         span_of!(ReprRustStruct, x),
@@ -62,31 +61,17 @@ fn test_fields_non_overlapping() {
     test_non_overlapping(&fields[3], &fields[4]);
 }
 
-#[cfg_attr(test, test)]
 fn test_fields_aligned() {
-    assert_eq!(
-        (core::mem::offset_of!(ReprRustStruct, x) % (core::mem::align_of::<i32>())),
-        0
-    );
-    assert_eq!(
-        (core::mem::offset_of!(ReprRustStruct, y) % (core::mem::align_of::<[u32; 4]>())),
-        0
-    );
-    assert_eq!(
-        (core::mem::offset_of!(ReprRustStruct, z) % (core::mem::align_of::<f32>())),
-        0
-    );
-    assert_eq!(
-        (core::mem::offset_of!(ReprRustStruct, a) % (core::mem::align_of::<u128>())),
-        0
-    );
+    assert_eq!((core::mem::offset_of!(ReprRustStruct, x) % (core::mem::align_of::<i32>())), 0);
+    assert_eq!((core::mem::offset_of!(ReprRustStruct, y) % (core::mem::align_of::<[u32; 4]>())), 0);
+    assert_eq!((core::mem::offset_of!(ReprRustStruct, z) % (core::mem::align_of::<f32>())), 0);
+    assert_eq!((core::mem::offset_of!(ReprRustStruct, a) % (core::mem::align_of::<u128>())), 0);
     assert_eq!(
         (core::mem::offset_of!(ReprRustStruct, b) % (core::mem::align_of::<Overaligned>())),
         0
     );
 }
 
-#[cfg(not(test))]
 fn main() {
     test_fields_non_overlapping();
     test_fields_aligned();
diff --git a/tests/ui/layout/aggregate-lang/struct-size.rs b/tests/ui/layout/aggregate-lang/struct-size.rs
index 3d93a8dca3487..f9fb605c32486 100644
--- a/tests/ui/layout/aggregate-lang/struct-size.rs
+++ b/tests/ui/layout/aggregate-lang/struct-size.rs
@@ -10,7 +10,6 @@ struct ReprRustStruct {
     a: u128,
 }
 
-#[cfg_attr(test, test)]
 fn test_size_contains_all_types() {
     assert!(
         core::mem::size_of::<ReprRustStruct>()
@@ -21,7 +20,6 @@ fn test_size_contains_all_types() {
     );
 }
 
-#[cfg_attr(test, test)]
 fn test_size_contains_all_fields() {
     assert!(
         (core::mem::offset_of!(ReprRustStruct, x) + core::mem::size_of::<i32>())
@@ -41,15 +39,10 @@ fn test_size_contains_all_fields() {
     );
 }
 
-#[cfg_attr(test, test)]
 fn test_size_modulo_align() {
-    assert_eq!(
-        core::mem::size_of::<ReprRustStruct>() % core::mem::align_of::<ReprRustStruct>(),
-        0
-    );
+    assert_eq!(core::mem::size_of::<ReprRustStruct>() % core::mem::align_of::<ReprRustStruct>(), 0);
 }
 
-#[cfg(not(test))]
 fn main() {
     test_size_contains_all_fields();
     test_size_contains_all_types();
diff --git a/tests/ui/layout/aggregate-lang/union-align.rs b/tests/ui/layout/aggregate-lang/union-align.rs
index a37d94abfa832..03825f1df2137 100644
--- a/tests/ui/layout/aggregate-lang/union-align.rs
+++ b/tests/ui/layout/aggregate-lang/union-align.rs
@@ -16,7 +16,6 @@ union ReprRustUnion {
     b: Overaligned,
 }
 
-#[cfg_attr(test, test)]
 fn test_alignment_contains_all_fields() {
     assert!(core::mem::align_of::<ReprRustUnion>() >= core::mem::align_of::<i32>());
     assert!(core::mem::align_of::<ReprRustUnion>() >= core::mem::align_of::<[u32; 4]>());
@@ -25,7 +24,6 @@ fn test_alignment_contains_all_fields() {
     assert!(core::mem::align_of::<ReprRustUnion>() >= core::mem::align_of::<Overaligned>());
 }
 
-#[cfg(not(test))]
 fn main() {
     test_alignment_contains_all_fields();
 }
diff --git a/tests/ui/layout/aggregate-lang/union-offsets.rs b/tests/ui/layout/aggregate-lang/union-offsets.rs
index 2a2f7d9c790b7..29ab0a9ce5490 100644
--- a/tests/ui/layout/aggregate-lang/union-offsets.rs
+++ b/tests/ui/layout/aggregate-lang/union-offsets.rs
@@ -16,31 +16,17 @@ union ReprRustUnion {
     b: Overaligned,
 }
 
-#[cfg_attr(test, test)]
 fn test_fields_aligned() {
-    assert_eq!(
-        (core::mem::offset_of!(ReprRustUnion, x) % (core::mem::align_of::<i32>())),
-        0
-    );
-    assert_eq!(
-        (core::mem::offset_of!(ReprRustUnion, y) % (core::mem::align_of::<[u32; 4]>())),
-        0
-    );
-    assert_eq!(
-        (core::mem::offset_of!(ReprRustUnion, z) % (core::mem::align_of::<f32>())),
-        0
-    );
-    assert_eq!(
-        (core::mem::offset_of!(ReprRustUnion, a) % (core::mem::align_of::<u128>())),
-        0
-    );
+    assert_eq!((core::mem::offset_of!(ReprRustUnion, x) % (core::mem::align_of::<i32>())), 0);
+    assert_eq!((core::mem::offset_of!(ReprRustUnion, y) % (core::mem::align_of::<[u32; 4]>())), 0);
+    assert_eq!((core::mem::offset_of!(ReprRustUnion, z) % (core::mem::align_of::<f32>())), 0);
+    assert_eq!((core::mem::offset_of!(ReprRustUnion, a) % (core::mem::align_of::<u128>())), 0);
     assert_eq!(
         (core::mem::offset_of!(ReprRustUnion, b) % (core::mem::align_of::<Overaligned>())),
         0
     );
 }
 
-#[cfg(not(test))]
 fn main() {
     test_fields_aligned();
 }
diff --git a/tests/ui/layout/aggregate-lang/union-size.rs b/tests/ui/layout/aggregate-lang/union-size.rs
index f82412f50899a..6d1b51b172db1 100644
--- a/tests/ui/layout/aggregate-lang/union-size.rs
+++ b/tests/ui/layout/aggregate-lang/union-size.rs
@@ -10,7 +10,6 @@ union ReprRustUnion {
     a: u128,
 }
 
-#[cfg_attr(test, test)]
 fn test_size_contains_each_type() {
     assert!(core::mem::size_of::<i32>() <= core::mem::size_of::<ReprRustUnion>());
     assert!(core::mem::size_of::<[u32; 4]>() <= core::mem::size_of::<ReprRustUnion>());
@@ -18,7 +17,6 @@ fn test_size_contains_each_type() {
     assert!(core::mem::size_of::<u128>() <= core::mem::size_of::<ReprRustUnion>());
 }
 
-#[cfg_attr(test, test)]
 fn test_size_contains_all_fields() {
     assert!(
         (core::mem::offset_of!(ReprRustUnion, x) + core::mem::size_of::<i32>())
@@ -38,15 +36,10 @@ fn test_size_contains_all_fields() {
     );
 }
 
-#[cfg_attr(test, test)]
 fn test_size_modulo_align() {
-    assert_eq!(
-        core::mem::size_of::<ReprRustUnion>() % core::mem::align_of::<ReprRustUnion>(),
-        0
-    );
+    assert_eq!(core::mem::size_of::<ReprRustUnion>() % core::mem::align_of::<ReprRustUnion>(), 0);
 }
 
-#[cfg(not(test))]
 fn main() {
     test_size_contains_each_type();
     test_size_contains_all_fields();