In thread 6edd3c421700:
/home/minetest/minetest_core/src/util/pointer.h:279: void SharedBuffer<T>::drop() [with T = unsigned char]: Assertion '(*refcount) > 0' failed.
Debug stacks:
DEBUG STACK FOR THREAD 6edd33f22700:
#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*))
DEBUG STACK FOR THREAD 6edd38bf3700:
#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*))
DEBUG STACK FOR THREAD 6edd394b7700:
#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*))
DEBUG STACK FOR THREAD 6edd3a107700:
#0  virtual void* CurlFetchThread::Thread()
DEBUG STACK FOR THREAD 6edd3a989700:
#0  virtual void* ServerThread::Thread()
#1  void Server::AsyncRunStep(bool)
#2  void Server::SendBlocks(float)
#3  void Server::SendBlockNoLock(irr::u16, MapBlock*, irr::u8, irr::u16)
(Leftover data: #4  void ItemStack::serialize(std::ostream&) const)
(Leftover data: #5  void Server::SendHP(irr::u16, irr::u8))
DEBUG STACK FOR THREAD 6edd40f3c760:
#0  int main(int, char**)
#1  Dedicated server branch
#2  void dedicated_server_loop(Server&, bool&)
(Leftover data: #3  void Server::step(float))
/home/minetest/Scripts/minetestserver-freeforall.sh: line 25:  4590 Aborted                 /usr/bin/minetestserver --worldname FreeForAll_World --config /home/minetest/.minetest/minetest-server-freeforall.conf --gameid minetest_game --port 30006 --disable-unittests --logfile $DEBUG