./MasterServer(+0x1c3a6)[0x5572964b83a6]
/usr/lib/libstdc++.so.6(+0xa5c8a)[0x7f46a2047c8a]
/usr/lib/libstdc++.so.6(+0xa5cf7)[0x7f46a2047cf7]
/usr/lib/libstdc++.so.6(+0xa5f8e)[0x7f46a2047f8e]
./MasterServer(+0x126ba)[0x5572964ae6ba]
./MasterServer(+0x49777)[0x5572964e5777]
./MasterServer(+0x1ec98)[0x5572964bac98]
./MasterServer(+0x25090)[0x5572964c1090]
./MasterServer(+0x1f746)[0x5572964bb746]
./MasterServer(+0x13a86)[0x5572964afa86]
Error: signal -1: