(21/06/15 21:19:50) 015-06-21 16:19:01: ERROR[main]: UNRECOVERABLE error occurred. Stopping server. Please fix the following error:
2015-06-21 16:19:01: ERROR[main]: error in error handling

In thread 7f1e796cf7c0:
/build/minetest-9tQZQ2/minetest-201506170131/src/server.cpp:505: void Server::step(float): A fatal error occurred: error in error handling
Debug stacks:
DEBUG STACK FOR THREAD 7f1e6587e700:
#0  virtual void* EmergeThread::Thread()
(Leftover data: #1  MapBlock* ServerMap::loadBlock(v3s16))
(Leftover data: #2  void ServerMap::loadBlock(std::string*, v3s16, MapSector*, bool))
(Leftover data: #3  void ItemStack::deSerialize(std::istream&, IItemDefManager*))

(21/06/15 21:20:43) DEBUG STACK FOR THREAD 7f1e66dfc700:
#0  virtual void* EmergeThread::Thread()
(Leftover data: #1  MapBlock* ServerMap::loadBlock(v3s16))
(Leftover data: #2  void ServerMap::loadBlock(std::string*, v3s16, MapSector*, bool))
(Leftover data: #3  void ItemStack::deSerialize(std::istream&, IItemDefManager*))

(21/06/15 21:21:12) DEBUG STACK FOR THREAD 7f1e675fd700:
#0  virtual void* CurlFetchThread::Thread()
DEBUG STACK FOR THREAD 7f1e67dfe700:
#0  virtual void* ServerThread::Thread()
#1  void Server::Receive()
(Leftover data: #2  void Server::SendBlocks(float))
(Leftover data: #3  void RemoteClient::GetNextBlocks(ServerEnvironment*, EmergeManager*, float, std::vector<PrioritySortedBlockTransfer>&))
(Leftover data: #4  void ItemStack::serialize(std::ostream&) const)
(Leftover data: #5  bool getCraftingResult(Inventory*, ItemStack&, bool, IGameDef*))
(Leftover data: #6  void ItemStack::deSerialize(std::istream&, IItemDefManager*))

(21/06/15 21:21:27) DEBUG STACK FOR THREAD 7f1e796cf7c0:
#0  int main(int, char**)
#1  Dedicated server branch
#2  void dedicated_server_loop(Server&, bool&)
#3  void Server::step(float)