==8287== 768 bytes in 3 blocks are indirectly lost in loss record 69 of 108
==8287==    at 0x4C2ABA0: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==8287==    by 0x80F94F: _emalloc (zend_alloc.c:2427)
==8287==    by 0x7569947: php_phongo_malloc (php_phongo.c:1526)
==8287==    by 0x75248D1: bson_malloc (bson-memory.c:67)
==8287==    by 0x751898F: bson_copy_to (bson.c:2052)
==8287==    by 0x7550723: mongoc_server_description_handle_ismaster (mongoc-server-description.c:319)
==8287==    by 0x75510C6: mongoc_server_description_new_copy (mongoc-server-description.c:444)
==8287==    by 0x7556A02: mongoc_topology_server_by_id (mongoc-topology.c:379)
==8287==    by 0x7536169: mongoc_cluster_node_max_wire_version (mongoc-cluster.c:1934)
==8287==    by 0x755E9D1: _mongoc_write_command_execute (mongoc-write-command.c:816)
==8287==    by 0x752D4BF: mongoc_bulk_operation_execute (mongoc-bulk-operation.c:364)
==8287==    by 0x7565E60: phongo_execute_write (php_phongo.c:508)
==8287== 
==8287== 1,408 (1,152 direct, 256 indirect) bytes in 1 blocks are definitely lost in loss record 86 of 108
==8287==    at 0x4C2ABA0: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==8287==    by 0x80F94F: _emalloc (zend_alloc.c:2427)
==8287==    by 0x80FB9D: _safe_emalloc (zend_alloc.c:2583)
==8287==    by 0x80FCF0: _ecalloc (zend_alloc.c:2610)
==8287==    by 0x7569981: php_phongo_calloc (php_phongo.c:1531)
==8287==    by 0x7524920: bson_malloc0 (bson-memory.c:103)
==8287==    by 0x7550F88: mongoc_server_description_new_copy (mongoc-server-description.c:425)
==8287==    by 0x7556A02: mongoc_topology_server_by_id (mongoc-topology.c:379)
==8287==    by 0x75361F5: mongoc_cluster_node_min_wire_version (mongoc-cluster.c:1967)
==8287==    by 0x755DCB6: _mongoc_write_command_insert (mongoc-write-command.c:600)
==8287==    by 0x755EA81: _mongoc_write_command_execute (mongoc-write-command.c:825)
==8287==    by 0x752D4BF: mongoc_bulk_operation_execute (mongoc-bulk-operation.c:364)