One test is blocked in an inifinite loop on php 5.5+ and with sqlite3

docker run \

    --user $(id -u):$(id -g) \

    --env PHPBB_TEST_DBMS="phpbb\db\driver\sqlite3" \

    --env PHPBB_TEST_DBHOST="/dev/shm/phpbb_unit_tests.sqlite3" \

    --env PHPBB_TEST_DBPORT="" \

    --env PHPBB_TEST_DBNAME="" \

    --env PHPBB_TEST_DBUSER="" \

    --env PHPBB_TEST_DBPASSWD="" \

    --env PHPBB_TEST_TABLE_PREFIX="phpbb_" \

    --volume $(pwd):/data \

    --workdir /data \

    php:5.6 sh -c 'rm -Rf phpBB/cache/ && ln -s /dev/shm/ phpBB/cache && php -d memory_limit=-1 phpBB/vendor/bin/phpunit --group __nogroup__ --log-junit build/logs/phpunit.xml --filter=phpbb_tests_tree_nestedset_forum_regenerate_test::test_regenerate_left_right_ids#4'