# Check that expected warning is printed.
# shellcheck disable=SC2016
-grep -q 'No trace was found based on input `some_other_non_opt`' "$stderr_actual_file"
+bt_grep -q 'No trace was found based on input `some_other_non_opt`' "$stderr_actual_file"
ok "$?" "warning is printed"
rm -f "$stdout_actual_file"