$ docker run --rm --name validator-giflib-usage-giflib-tools-r18-gifclrmp-treescap-palette-three-columns-2536 -t --mount type=bind,src=/tmp/validator-status-giflib-usage-giflib-tools-r18-gifclrmp-treescap-palette-three-columns,dst=/validator/status validator-giflib-shared bash -lc 'set -euo pipefail
/validator/tests/_shared/install_override_debs.sh
exec /validator/tests/_shared/run_library_tests.sh "$@"' validator-testcase giflib usage-giflib-tools-r18-gifclrmp-treescap-palette-three-columns -- bash -c 'PS4=$1; shift; set -x; source "$@"' validator-xtrace '__VALIDATOR_XTRACE__ ' /validator/tests/giflib/tests/cases/usage/usage-giflib-tools-r18-gifclrmp-treescap-palette-three-columns.sh
no override packages found; continuing with apt originals
    if (NF != 4) { exit 2 }
    for (i = 1; i <= 4; i++) {
        if ($i !~ /^[0-9]+$/) { exit 3 }
    }
}' /tmp/validator-tmp/palette.txt