$ docker run --rm --name validator-libwebp-usage-python3-pil-webp-lossless-alpha-pixel-exact-2601 -t --mount type=bind,src=/tmp/validator-status-libwebp-usage-python3-pil-webp-lossless-alpha-pixel-exact,dst=/validator/status validator-libwebp-shared bash -lc 'set -euo pipefail
/validator/tests/_shared/install_override_debs.sh
exec /validator/tests/_shared/run_library_tests.sh "$@"' validator-testcase libwebp usage-python3-pil-webp-lossless-alpha-pixel-exact -- bash -c 'PS4=$1; shift; set -x; source "$@"' validator-xtrace '__VALIDATOR_XTRACE__ ' /validator/tests/libwebp/tests/cases/usage/usage-python3-pil-webp-lossless-alpha-pixel-exact.sh
no override packages found; continuing with apt originals
alpha-exact (4, 3) RGBA
/tmp/validator-tmp/out.webp: RIFF (little-endian) data, Web/P image