Core was generated by `/opt/couchbase/bin/memcached -C /opt/couchbase/var/lib/couchbase/config/memcach'.
Program terminated with signal 11, Segmentation fault.
#0  0x00007f8bbc0ad466 in __memcpy_ssse3_back () from /lib64/libc.so.6
(gdb) bt
#0  0x00007f8bbc0ad466 in __memcpy_ssse3_back () from /lib64/libc.so.6
#1  0x00007f8bbf43321a in copy (__n=7795416, __s2=0x7f8bba0bd798 "/opt/couchbase/var/lib/couchbase/crash", __s1=<optimized out>) at /usr/local/include/c++/7.2.0/bits/char_traits.h:292
#2  _S_copy (__n=7795416, __s=0x7f8bba0bd798 "/opt/couchbase/var/lib/couchbase/crash", __d=<optimized out>) at /usr/local/include/c++/7.2.0/bits/basic_string.h:324
#3  _S_copy_chars (__k2=<optimized out>, __k1=0x7f8bba0bd798 "/opt/couchbase/var/lib/couchbase/crash", __p=<optimized out>) at /usr/local/include/c++/7.2.0/bits/basic_string.h:366
#4  std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_construct<char*> (this=this@entry=0x7f8bba0d0028, __beg=0x7f8bba0bd798 "/opt/couchbase/var/lib/couchbase/crash", __end=<optimized out>)
    at /usr/local/include/c++/7.2.0/bits/basic_string.tcc:225
#5  0x00007f8bbf433273 in _M_construct_aux<char*> (__end=<optimized out>, __beg=<optimized out>, this=0x7f8bba0d0028) at /usr/local/include/c++/7.2.0/bits/basic_string.h:220
#6  _M_construct<char*> (__end=<optimized out>, __beg=<optimized out>, this=0x7f8bba0d0028) at /usr/local/include/c++/7.2.0/bits/basic_string.h:239
#7  basic_string (__str=..., this=0x7f8bba0d0028) at /usr/local/include/c++/7.2.0/bits/basic_string.h:424
#8  google_breakpad::MinidumpDescriptor::MinidumpDescriptor (this=0x7f8bba0d0020, descriptor=...) at src/client/linux/handler/minidump_descriptor.cc:48
#9  0x00007f8bbf432b38 in google_breakpad::ExceptionHandler::ExceptionHandler (this=0x7f8bba0d0000, descriptor=..., filter=<optimized out>, callback=<optimized out>, callback_context=<optimized out>, install_handler=<optimized out>,
    server_fd=-1) at src/client/linux/handler/exception_handler.cc:234
#10 0x00007f8bbf41cb53 in create_handler (minidump_dir="/opt/couchbase/var/lib/couchbase/crash") at /home/chupokabra/couchbase/build/couchbase/kv_engine/utilities/breakpad.cc:115
#11 0x00007f8bbf41cdc9 in cb::breakpad::initialize (settings=...) at /home/chupokabra/couchbase/build/couchbase/kv_engine/utilities/breakpad.cc:127
#12 0x0000000000451bb0 in Settings::notify_changed (this=this@entry=0x194d140 <settings>, key="breakpad") at /home/chupokabra/couchbase/build/couchbase/kv_engine/daemon/settings.cc:1277
#13 0x0000000000451eeb in setBreakpadSettings (breakpad=..., this=0x194d140 <settings>) at /home/chupokabra/couchbase/build/couchbase/kv_engine/daemon/settings.h:636
#14 handle_breakpad (s=..., obj=<optimized out>) at /home/chupokabra/couchbase/build/couchbase/kv_engine/daemon/settings.cc:648
Python Exception <class 'gdb.error'> There is no member or method named _M_head_impl.:
#15 0x0000000000455dc8 in Settings::reconfigure (this=this@entry=0x194d140 <settings>, json=) at /home/chupokabra/couchbase/build/couchbase/kv_engine/daemon/settings.cc:717
#16 0x0000000000473713 in load_config_file (file=0x7ffd061270d9 "/opt/couchbase/var/lib/couchbase/config/memcached.json", settings=...)
    at /home/chupokabra/couchbase/build/couchbase/kv_engine/daemon/config_parse.cc:50
#17 0x000000000046e8fe in parse_arguments (argc=argc@entry=3, argv=argv@entry=0x7ffd06125d68) at /home/chupokabra/couchbase/build/couchbase/kv_engine/daemon/cmdline.cc:213
#18 0x00000000004351cf in memcached_main (argc=3, argv=0x7ffd06125d68) at /home/chupokabra/couchbase/build/couchbase/kv_engine/daemon/memcached.cc:2366
#19 0x00007f8bbbf79545 in __libc_start_main () from /lib64/libc.so.6
#20 0x000000000042c14e in _start ()
(gdb) f 8
#8  google_breakpad::MinidumpDescriptor::MinidumpDescriptor (this=0x7f6c8729a0c0, descriptor=...) at src/client/linux/handler/minidump_descriptor.cc:48
48	src/client/linux/handler/minidump_descriptor.cc: No such file or directory.
(gdb) ptype /mt descriptor
type = const class google_breakpad::MinidumpDescriptor {
  public:
    static const google_breakpad::MinidumpDescriptor::MicrodumpOnConsole kMicrodumpOnConsole;
  private:
    google_breakpad::MinidumpDescriptor::DumpMode mode_;
    int fd_;
    std::__cxx11::string directory_;
    std::__cxx11::string path_;
    const char *c_path_;
    off_t size_limit_;
    google_breakpad::MicrodumpExtraInfo microdump_extra_info_;
} &
(gdb) f 10
#10 0x00007f6c8c6c6b53 in create_handler (minidump_dir=...) at /home/chupokabra/couchbase/build/couchbase/kv_engine/utilities/breakpad.cc:115
115	                                       /*server_fd*/ -1));
(gdb) ptype /mt minidump_dir
type = const class std::basic_string<char, std::char_traits<char>, std::allocator<char> > [with _CharT = char, _Traits = std::char_traits<char>, _Alloc = std::allocator<char>] {
  public:
    static size_type npos;
  private:
    std::basic_string<_CharT, _Traits, _Alloc>::_Alloc_hider _M_dataplus;
} &