$ docker run --rm --name validator-libpng-usage-pngquant-floyd-png-2710 -t --mount type=bind,src=/tmp/validator-status-libpng-usage-pngquant-floyd-png,dst=/validator/status validator-libpng-shared bash -lc 'set -euo pipefail /validator/tests/_shared/install_override_debs.sh exec /validator/tests/_shared/run_library_tests.sh "$@"' validator-testcase libpng usage-pngquant-floyd-png -- bash -c 'PS4=$1; shift; set -x; source "$@"' validator-xtrace '__VALIDATOR_XTRACE__ ' /validator/tests/libpng/tests/cases/usage/usage-pngquant-floyd-png.sh no override packages found; continuing with apt originals /tmp/validator-tmp/out.png: PNG image data, 32 x 32, 4-bit colormap, non-interlaced