diff --git a/images/instrumentation/test/test-all.sh b/images/instrumentation/test/test-all.sh
index e4112dec..130edb53 100755
--- a/images/instrumentation/test/test-all.sh
+++ b/images/instrumentation/test/test-all.sh
@@ -79,7 +79,7 @@ run_tests_for_runtime() {
       2>&1
     ); then
       printf "${GREEN}test case \"${test}\": OK${NC}\n"
-    elif [ "${runtime}" = "node" ] && docker_run_output=$(docker run \
+    elif [ "${runtime}" = "node" ] && (docker run \
       --env-file="${script_dir}/${runtime}/test-cases/${test}/.env" \
       "${image_name_test}" \
       node "/test-cases/${test}" \
@@ -89,7 +89,6 @@ run_tests_for_runtime() {
     else
       printf "${RED}test case \"${test}\": FAIL\n"
       printf "test output:${NC}\n"
-      echo "$docker_run_output"
       exit_code=1
       summary="$summary\n${runtime}/${base_image}\t- ${test}:\tfailed"
     fi