Temp change for testing

(Temporarily) add some WriteLines to Vector4.ShuffleTest to hopefully narrow down the cause of failure

temp change part 2

ensure message will be identifiable

Update Vector4Tests.cs

src/libraries/System.Numerics.Vectors/tests/Vector4Tests.cs

@@ -2204,6 +2204,15 @@ public void GetElementTest(float x, float y, float z, float w)
         [InlineData(5.0f, 6.0f, 7.0f, 8.0f)]
         public void ShuffleTest(float x, float y, float z, float w)
         {
+            System.Console.WriteLine("Vector4Tests.ShuffleTest (INFO) 1: " + System.Runtime.Intrinsics.X86.Sse2.IsSupported);
+            System.Console.WriteLine("Vector4Tests.ShuffleTest (INFO) 2: " + System.Runtime.Intrinsics.X86.Ssse3.IsSupported);
+            System.Console.WriteLine("Vector4Tests.ShuffleTest (INFO) 3: " + System.Runtime.Intrinsics.X86.Avx.IsSupported);
+            System.Console.WriteLine("Vector4Tests.ShuffleTest (INFO) 4: " + System.Runtime.Intrinsics.X86.Avx2.IsSupported);
+            System.Console.WriteLine("Vector4Tests.ShuffleTest (INFO) 5: " + System.Runtime.Intrinsics.X86.Avx512F.IsSupported);
+            System.Console.WriteLine("Vector4Tests.ShuffleTest (INFO) 6: " + System.Runtime.Intrinsics.X86.Avx512F.VL.IsSupported);
+            System.Console.WriteLine("Vector4Tests.ShuffleTest (INFO) 7: " + System.Runtime.Intrinsics.X86.Avx10v1.IsSupported);
+            System.Console.WriteLine("Vector4Tests.ShuffleTest (INFO) 8: " + Vector4.Shuffle(Vector4.Create(x, y, z, w), 3, 2, 1, 0));
+            System.Console.WriteLine("Vector4Tests.ShuffleTest (INFO) 9: " + Vector4.Shuffle(Vector4.Create(x, y, z, w), 1, 0, 3, 2));
             Assert.Equal(Vector4.Create(w, z, y, x), Vector4.Shuffle(Vector4.Create(x, y, z, w), 3, 2, 1, 0));
             Assert.Equal(Vector4.Create(y, x, w, z), Vector4.Shuffle(Vector4.Create(x, y, z, w), 1, 0, 3, 2));
         }