message: clear existing failed test output images for subsequent test script runs
diff: @@ -22,6 +22,9 @@ cmake \
  make -j 4 ospray_test_data
  +rm -rf failed
  +mkdir failed
  +
  regression_tests/ospray_test_suite --gtest_output=xml:tests.xml --baseline-dir=regression_tests/baseline/ --failed-dir=failed
  FAILED=$(echo $?)
  