diff --git a/ci/test.sh b/ci/test.sh
index eaa4f5d9b..152f68a89 100755
--- a/ci/test.sh
+++ b/ci/test.sh
@@ -298,6 +298,7 @@ cross_test() {
     else
         for runner in ${RUNNERS}; do
             echo -e "[target.${TARGET}]\nrunner = \"${runner}\"" > "${CARGO_TMP_DIR}"/Cross.toml
+            echo -e "[unused]\nhello = \"world\"" >> "${CARGO_TMP_DIR}"/Cross.toml
             "${CROSS[@]}" test "$@" ${CROSS_FLAGS}
         done
     fi