Program received signal SIGABRT, Aborted.
0x00007f2f161b42c7 in raise () from /lib64/libc.so.6
(gdb) bt
#0  0x00007f2f161b42c7 in raise () from /lib64/libc.so.6
#1  0x00007f2f161b59b8 in abort () from /lib64/libc.so.6
#2  0x00007f2f161f6e17 in __libc_message () from /lib64/libc.so.6
#3  0x00007f2f16295b67 in __fortify_fail () from /lib64/libc.so.6
#4  0x00007f2f16295b22 in __stack_chk_fail () from /lib64/libc.so.6
#5  0x00007f2efe76400a in mongoc_stream_tls_openssl_new (
    base_stream=base_stream@entry=0x55a498722700, 
    host=0x55a498230c98 "2a01:4f8:173:1828::40", opt=0x55a498231968, 
    client=<optimized out>)
    at /usr/src/debug/php-pecl-mongodb-1.6.0~alpha2/NTS/src/libmongoc/src/libmongoc/src/mongoc/mongoc-stream-tls-openssl.c:777
#6  0x00007f2efe762854 in mongoc_stream_tls_new_with_hostname (
    base_stream=base_stream@entry=0x55a498722700, host=<optimized out>, 
    opt=<optimized out>, client=client@entry=1)
    at /usr/src/debug/php-pecl-mongodb-1.6.0~alpha2/NTS/src/libmongoc/src/libmongoc/src/mongoc/mongoc-stream-tls.c:220
#7  0x00007f2efe7698ed in _mongoc_topology_scanner_node_setup_stream_for_tls (
    node=<optimized out>, stream=0x55a498722700)
    at /usr/src/debug/php-pecl-mongodb-1.6.0~alpha2/NTS/src/libmongoc/src/libmongoc/src/mongoc/mongoc-topology-scanner.c:601
#8  0x00007f2efe721e27 in _mongoc_async_cmd_phase_initiate (
    acmd=0x55a498722020)
    at /usr/src/debug/php-pecl-mongodb-1.6.0~alpha2/NTS/src/libmongoc/src/libmongoc/src/mongoc/mongoc-async-cmd.c:245
#9  0x00007f2efe722483 in mongoc_async_cmd_run (acmd=acmd@entry=0x55a498722020)
    at /usr/src/debug/php-pecl-mongodb-1.6.0~alpha2/NTS/src/libmongoc/src/libmongoc/src/mongoc/mongoc-async-cmd.c:114
#10 0x00007f2efe72180d in mongoc_async_run (async=0x55a49822d520)
    at /usr/src/debug/php-pecl-mongodb-1.6.0~alpha2/NTS/src/libmongoc/src/libmongoc/src/mongoc/mongoc-async.c:94
#11 0x00007f2efe76a2c0 in mongoc_topology_scanner_work (ts=0x55a49822eef0)
    at /usr/src/debug/php-pecl-mongodb-1.6.0~alpha2/NTS/src/libmongoc/src/libmongoc/src/mongoc/mongoc-topology-scanner.c:1007
#12 0x00007f2efe76439b in mongoc_topology_scan_once (
    topology=topology@entry=0x55a49822de90, 
    obey_cooldown=obey_cooldown@entry=true)
    at /usr/src/debug/php-pecl-mongodb-1.6.0~alpha2/NTS/src/libmongoc/src/libmongoc/src/mongoc/mongoc-topology.c:471
#13 0x00007f2efe764cc5 in _mongoc_topology_do_blocking_scan (
    topology=topology@entry=0x55a49822de90, error=error@entry=0x7fff34f386a0)
    at /usr/src/debug/php-pecl-mongodb-1.6.0~alpha2/NTS/src/libmongoc/src/libmongoc/src/mongoc/mongoc-topology.c:501
#14 0x00007f2efe7653b7 in mongoc_topology_select_server_id (
    topology=topology@entry=0x55a49822de90, 
    optype=optype@entry=MONGOC_SS_READ, 
    read_prefs=read_prefs@entry=0x55a49822d710, 
    error=error@entry=0x7fff34f38950)
    at /usr/src/debug/php-pecl-mongodb-1.6.0~alpha2/NTS/src/libmongoc/src/libmongoc/src/mongoc/mongoc-topology.c:734
#15 0x00007f2efe765561 in mongoc_topology_select (topology=0x55a49822de90, 
    optype=optype@entry=MONGOC_SS_READ, 
    read_prefs=read_prefs@entry=0x55a49822d710, 
    error=error@entry=0x7fff34f38950)
    at /usr/src/debug/php-pecl-mongodb-1.6.0~alpha2/NTS/src/libmongoc/src/libmongoc/src/mongoc/mongoc-topology.c:616
#16 0x00007f2efe729d44 in mongoc_client_select_server (
    client=client@entry=0x55a4982318e0, for_writes=for_writes@entry=false, 
    prefs=0x55a49822d710, error=error@entry=0x7fff34f38950)
    at /usr/src/debug/php-pecl-mongodb-1.6.0~alpha2/NTS/src/libmongoc/src/libmongoc/src/mongoc/mongoc-client.c:2620
#17 0x00007f2efe78c692 in php_phongo_manager_select_server (
    for_writes=for_writes@entry=false, zreadPreference=<optimized out>, 
    client=0x55a4982318e0, server_id=server_id@entry=0x7fff34f38b9c)
    at /usr/src/debug/php-pecl-mongodb-1.6.0~alpha2/NTS/src/MongoDB/Manager.c:271
#18 0x00007f2efe78c793 in zim_Manager_selectServer (
    execute_data=<optimized out>, return_value=0x7f2f14e15210)
    at /usr/src/debug/php-pecl-mongodb-1.6.0~alpha2/NTS/src/MongoDB/Manager.c:631
#19 0x000055a496fef3a4 in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER ()
#20 0x000055a496f95f2b in execute_ex ()
#21 0x000055a496f3b984 in zend_call_function ()
#22 0x000055a496f6a4d4 in zend_call_method ()
#23 0x000055a496f6aad7 in zend_user_it_rewind ()
#24 0x000055a496faec96 in ZEND_FE_RESET_R_SPEC_VAR_HANDLER ()
#25 0x000055a496f95f2b in execute_ex ()
#26 0x000055a496ff17f8 in zend_execute ()
#27 0x000055a496f4bcb3 in zend_execute_scripts ()
#28 0x000055a496ee7510 in php_execute_script ()
#29 0x000055a496ff3a5c in do_cli ()
#30 0x000055a496d780aa in main ()