diff --git a/infra/k8s/argo/nsys-test-template.yaml b/infra/k8s/argo/nsys-test-template.yaml
index 76c383383..174845395 100644
--- a/infra/k8s/argo/nsys-test-template.yaml
+++ b/infra/k8s/argo/nsys-test-template.yaml
@@ -233,9 +233,12 @@ spec:
             fi
             echo "=== Test binary: $TEST_BIN ==="
 
-            if ! "$TEST_BIN" --list 2>&1 | grep -q "$TEST_NAME"; then
+            # grep -q + pipefail = SIGPIPE on early exit. Capture once, grep
+            # without -q so the consumer reads all input.
+            TEST_LIST=$("$TEST_BIN" --list 2>&1 || true)
+            if ! echo "$TEST_LIST" | grep -F "$TEST_NAME" > /dev/null; then
               echo "ERROR: test '$TEST_NAME' not found"
-              "$TEST_BIN" --list 2>&1 | grep smoke_tests | head -30
+              echo "$TEST_LIST" | grep smoke_tests | (head -30 || true)
               exit 4
             fi
 
diff --git a/infra/k8s/argo/sanitizer-test-template.yaml b/infra/k8s/argo/sanitizer-test-template.yaml
index 2bdbd8ae2..c18de164d 100644
--- a/infra/k8s/argo/sanitizer-test-template.yaml
+++ b/infra/k8s/argo/sanitizer-test-template.yaml
@@ -222,10 +222,13 @@ spec:
             echo "=== Test binary: $TEST_BIN ==="
 
             # --- Verify the test exists in the binary ---
-            if ! "$TEST_BIN" --list 2>&1 | grep -q "$TEST_NAME"; then
+            # grep -q + pipefail = SIGPIPE on early exit. Capture once, grep
+            # without -q so the consumer reads all input. Same below for nsys.
+            TEST_LIST=$("$TEST_BIN" --list 2>&1 || true)
+            if ! echo "$TEST_LIST" | grep -F "$TEST_NAME" > /dev/null; then
               echo "ERROR: test '$TEST_NAME' not found in binary."
               echo "Available smoke tests:"
-              "$TEST_BIN" --list 2>&1 | grep smoke_tests | head -30
+              echo "$TEST_LIST" | grep smoke_tests | (head -30 || true)
               exit 4
             fi