Rewritten snapshot for token database about jmzk HOT 1 CLOSED

Operating system: Linux
                  0.0.0 Linux 4.9.0-7-amd64 #1 SMP Debian 4.9.110-3+deb9u2 (2018-08-13) x86_64
CPU: amd64
     family 6 model 85 stepping 4
     1 CPU

GPU: UNKNOWN

Crash reason:  SIGSEGV /SEGV_MAPERR
Crash address: 0x31
Process uptime: not available

Thread 0 (crashed)
 0  evtd!rocksdb::BackupEngineImpl::BackupMeta::StoreToFile(bool) [backupable_db.cc : 1822 + 0x13]
    rax = 0x0000000000000001   rdx = 0x00000000011f8971
    rcx = 0x0000000000000000   rbx = 0x00007f72ae8ce010
    rsi = 0x0000000000000013   rdi = 0x00007fff9c17d210
    rbp = 0x00007fff9c17d2e0   rsp = 0x00007fff9c17d120
     r8 = 0x00007fff9c17d210    r9 = 0x00007f72aef53e80
    r10 = 0x0000000000000000   r11 = 0x00007f72aef53f00
    r12 = 0x00007f7250c00ec0   r13 = 0x0000000000000012
    r14 = 0x00007f72ae827380   r15 = 0x0000000000a836c6
    rip = 0x0000000000db0add
    Found by: given as instruction pointer in context
 1  evtd!rocksdb::BackupEngineImpl::CreateNewBackupWithMetadata(rocksdb::DB*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool, std::function<void ()>) [backupable_db.cc : 900 + 0x1b]
    rbx = 0x00057eb161f5563f   rbp = 0x00007fff9c17d7b0
    rsp = 0x00007fff9c17d2f0   r12 = 0x00007fff9c17d400
    r13 = 0x00000000aa987245   r14 = 0x00007fff9c17d580
    r15 = 0x00007f72ae84e680   rip = 0x0000000000dba4a2
    Found by: call frame info
 2  evtd!evt::chain::token_database_snapshot::add_to_snapshot(std::shared_ptr<evt::chain::snapshot_writer>, evt::chain::token_database const&) [backupable_db.h : 277 + 0x25]
    rbx = 0x00007fff9c17dd90   rbp = 0x00007f72ae8f71c0
    rsp = 0x00007fff9c17d7c0   r12 = 0x00007fff9c17d9a0
    r13 = 0x00007f72ae84e680   r14 = 0x00007fff9c17e070
    r15 = 0x00007fff9c17db30   rip = 0x000000000099ed77
    Found by: call frame info