diff --git a/crates/std_detect/tests/cpu-detection.rs b/crates/std_detect/tests/cpu-detection.rs
index f20ea6a2f7..8d551fc2cb 100644
--- a/crates/std_detect/tests/cpu-detection.rs
+++ b/crates/std_detect/tests/cpu-detection.rs
@@ -1,19 +1,20 @@
-#![feature(
-    stdarch_internal,
-    stdarch_arm_feature_detection,
-    stdarch_powerpc_feature_detection
-)]
+#![feature(stdarch_internal)]
+#![cfg_attr(target_arch = "arm", feature(stdarch_arm_feature_detection))]
+#![cfg_attr(target_arch = "powerpc", feature(stdarch_powerpc_feature_detection))]
+#![cfg_attr(target_arch = "powerpc64", feature(stdarch_powerpc_feature_detection))]
 #![allow(clippy::unwrap_used, clippy::use_debug, clippy::print_stdout)]
-#![cfg(any(
-    target_arch = "arm",
-    target_arch = "aarch64",
-    target_arch = "x86",
-    target_arch = "x86_64",
-    target_arch = "powerpc",
-    target_arch = "powerpc64"
-))]
 
-#[macro_use]
+#[cfg_attr(
+    any(
+        target_arch = "arm",
+        target_arch = "aarch64",
+        target_arch = "x86",
+        target_arch = "x86_64",
+        target_arch = "powerpc",
+        target_arch = "powerpc64"
+    ),
+    macro_use
+)]
 extern crate std_detect;
 
 #[test]
diff --git a/crates/std_detect/tests/macro_trailing_commas.rs b/crates/std_detect/tests/macro_trailing_commas.rs
index 3d5c736a05..8304b225f5 100644
--- a/crates/std_detect/tests/macro_trailing_commas.rs
+++ b/crates/std_detect/tests/macro_trailing_commas.rs
@@ -1,4 +1,6 @@
-#![feature(stdarch_arm_feature_detection, stdarch_powerpc_feature_detection)]
+#![cfg_attr(target_arch = "arm", feature(stdarch_arm_feature_detection))]
+#![cfg_attr(target_arch = "powerpc", feature(stdarch_powerpc_feature_detection))]
+#![cfg_attr(target_arch = "powerpc64", feature(stdarch_powerpc_feature_detection))]
 #![allow(clippy::unwrap_used, clippy::use_debug, clippy::print_stdout)]
 
 #[cfg(any(
diff --git a/examples/connect5.rs b/examples/connect5.rs
index 6298255421..ffbff5e486 100644
--- a/examples/connect5.rs
+++ b/examples/connect5.rs
@@ -28,7 +28,9 @@
 //! You should see a game self-playing. In the end of the game, it shows the average time for
 //! each move.
 
-#![feature(avx512_target_feature, stdarch_x86_avx512)]
+#![feature(avx512_target_feature)]
+#![cfg_attr(target_arch = "x86", feature(stdarch_x86_avx512))]
+#![cfg_attr(target_arch = "x86_64", feature(stdarch_x86_avx512))]
 #![feature(stmt_expr_attributes)]
 
 use rand::seq::SliceRandom;