diff --git a/std/atomic/queue.zig b/std/atomic/queue.zig
index 4f856d9e017bb9434f65d16ff49ca1f04ea713d8..2a4840738352daac4517a568c8ebc3e59d962174 100644
--- a/std/atomic/queue.zig
+++ b/std/atomic/queue.zig
@@ -94,8 +94,18 @@ test "std.atomic.queue" {
     for (getters) |t|
         t.wait();
 
-    std.debug.assert(context.put_sum == context.get_sum);
-    std.debug.assert(context.get_count == puts_per_thread * put_thread_count);
+    if (context.put_sum != context.get_sum) {
+        std.debug.panic("failure\nput_sum:{} != get_sum:{}", context.put_sum, context.get_sum);
+    }
+
+    if (context.get_count != puts_per_thread * put_thread_count) {
+        std.debug.panic(
+            "failure\nget_count:{} != puts_per_thread:{} * put_thread_count:{}",
+            context.get_count,
+            u32(puts_per_thread),
+            u32(put_thread_count),
+        );
+    }
 }
 
 fn startPuts(ctx: *Context) u8 {
diff --git a/std/atomic/stack.zig b/std/atomic/stack.zig
index 77fa1a9100bc5e4bf02be37b75d44b0f83cdbb96..c6b368b990907dd70256e107a73e0b7c99cf68ef 100644
--- a/std/atomic/stack.zig
+++ b/std/atomic/stack.zig
@@ -97,8 +97,18 @@ test "std.atomic.stack" {
     for (getters) |t|
         t.wait();
 
-    std.debug.assert(context.put_sum == context.get_sum);
-    std.debug.assert(context.get_count == puts_per_thread * put_thread_count);
+    if (context.put_sum != context.get_sum) {
+        std.debug.panic("failure\nput_sum:{} != get_sum:{}", context.put_sum, context.get_sum);
+    }
+
+    if (context.get_count != puts_per_thread * put_thread_count) {
+        std.debug.panic(
+            "failure\nget_count:{} != puts_per_thread:{} * put_thread_count:{}",
+            context.get_count,
+            u32(puts_per_thread),
+            u32(put_thread_count),
+        );
+    }
 }
 
 fn startPuts(ctx: *Context) u8 {