03:23:44: ACTION[ServerThread]: John_Lennon times out. List of players: 
03:23:44: INFO[ServerThread]: Server: Got TOSERVER_INIT from 2
03:23:44: VERBOSE[ServerThread]: ServerEnvironment::addActiveObjectRaw(): Added id=275; there are now 275 active objects.

In thread b68ffb70:
/home/celeron55/softat/minetest/src/serverremoteplayer.cpp:111: virtual void ServerRemotePlayer::addedToEnvironment(): Assertion '!m_is_in_environment' failed.
Debug stacks:
DEBUG STACK FOR THREAD b68ffb70:
#0  virtual void* ServerThread::Thread()
#1  void Server::Receive()
#2  void Server::ProcessData(irr::u8*, irr::u32, irr::u16)
(Leftover data: #3  RemoteClient* Server::getClient(irr::u16))
(Leftover data: #4  void ItemStack::serialize(std::ostream&) const)
(Leftover data: #5  void ServerMap::loadBlock(std::string*, v3s16, MapSector*, bool))
(Leftover data: #6  void ItemStack::deSerialize(std::istream&, IItemDefManager*))
DEBUG STACK FOR THREAD b74636d0:
#0  int main(int, char**)
#1  void dedicated_server_loop(Server&, bool&)
(Leftover data: #2  void Server::step(float))



(gdb) bt
#0  0xb773a424 in __kernel_vsyscall ()
#1  0xb748f911 in raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#2  0xb7492d42 in abort () at abort.c:92
#3  0x08109027 in assert_fail (assertion=0x8214821 "!m_is_in_environment", 
    file=0x821486c "/home/celeron55/softat/minetest/src/serverremoteplayer.cpp", 
    line=111, 
    function=0x8214a60 "virtual void ServerRemotePlayer::addedToEnvironment()")
    at /home/celeron55/softat/minetest/src/debug.cpp:81
#4  0x0808c3b8 in ServerRemotePlayer::addedToEnvironment (this=0x8cd27c0)
    at /home/celeron55/softat/minetest/src/serverremoteplayer.cpp:111
#5  0x0811abad in ServerEnvironment::addActiveObjectRaw (this=0x8c86478, object=
    0x8cd281c, set_changed=true)
    at /home/celeron55/softat/minetest/src/environment.cpp:1417
#6  0x0811b6e5 in ServerEnvironment::addActiveObject (this=0x8c86478, 
    object=0x8cd281c) at /home/celeron55/softat/minetest/src/environment.cpp:1218
#7  0x08125d6c in Server::emergePlayer (this=0xbff95468, 
    name=0xb68fefb4 "John_Lennon", peer_id=2)
    at /home/celeron55/softat/minetest/src/server.cpp:4267
#8  0x081357c0 in Server::ProcessData (this=0xbff95468, data=0xb512dec0 "", 
    datasize=53, peer_id=22)
    at /home/celeron55/softat/minetest/src/server.cpp:2064
#9  0x0813a1ef in Server::Receive (this=0xbff95468)
    at /home/celeron55/softat/minetest/src/server.cpp:1833
#10 0x0813a333 in ServerThread::Thread (this=0xbff956b4)
    at /home/celeron55/softat/minetest/src/server.cpp:102
#11 0x081810b0 in JThread::TheThread (param=0xbff956b4)
    at /home/celeron55/softat/minetest/src/jthread/pthread/jthread.cpp:166
#12 0xb76fbc39 in start_thread (arg=0xb68ffb70) at pthread_create.c:304
#13 0xb753196e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130