Crash caused by signal #15: Terminated

Version: Dungeon Crawl Stone Soup 0.23-a0-164-g7711e57
Platform: unix
Bits: 64
Game mode: normal
Tiles: online

Command line: /usr/games/crawl-git-7711e572f3 -name Amnesiac -rc /dgldir/rcfiles/crawl-git/Amnesiac.rc -macro /dgldir/rcfiles/crawl-git/Amnesiac.macro -morgue /dgldir/morgue/Amnesiac/ -webtiles-socket /crawl-master/webserver/sockets/Amnesiac:2018-09-09.04:35:06.sock -await-connection

RC options:
restart_after_game = false


Crash caused by signal #15: Terminated

Obtained 35 stack frames.
/usr/games/crawl-git-7711e572f3(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x6bcb43]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-7711e572f3(_Z13do_crash_dumpv+0x3c0) [0x6c4300]: do_crash_dump()
/usr/games/crawl-git-7711e572f3(_Z20crash_signal_handleri+0x74) [0x6bcd94]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x321e0) [0x7f9623bf61e0]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x76c9b) [0x7f9623c3ac9b]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x79174) [0x7f9623c3d174]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_malloc+0x70) [0x7f9623c3f8a0]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0x1035c) [0x7f962547335c]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0x14246) [0x7f9625477246]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0x149e8) [0x7f96254779e8]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0x14e7e) [0x7f9625477e7e]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0x161f2) [0x7f96254791f2]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0x16e1c) [0x7f9625479e1c]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xce7d) [0x7f962546fe7d]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xc0ca) [0x7f962546f0ca]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xd02f) [0x7f962547002f]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(lua_pcall+0x51) [0x7f962546bb41]: 
/usr/games/crawl-git-7711e572f3(_ZN4CLua6callfnEPKcii+0xbf) [0x6a585f]: CLua::callfn(char const*, int, int)
/usr/games/crawl-git-7711e572f3(_ZN7map_def7run_luaEb+0xb6) [0x8e8bc6]: map_def::run_lua(bool)
/usr/games/crawl-git-7711e572f3(_ZN7map_def16validate_map_defERK12depth_ranges+0x49) [0x8f6f69]: map_def::validate_map_def(depth_ranges const&)
/usr/games/crawl-git-7711e572f3(_Z7yyparsev+0x20ab) [0xc3221b]: yyparse()
/usr/games/crawl-git-7711e572f3(_Z8read_mapRKSs+0x36c) [0x9183dc]: read_map(std::string const&)
/usr/games/crawl-git-7711e572f3() [0x888f79]
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xca28) [0x7f962546fa28]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0x17328) [0x7f962547a328]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xce7d) [0x7f962546fe7d]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xc0ca) [0x7f962546f0ca]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xd02f) [0x7f962547002f]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(lua_pcall+0x51) [0x7f962546bb41]: 
/usr/games/crawl-git-7711e572f3(_ZN4CLua8execfileEPKcbbb+0x15e) [0x6a49ae]: CLua::execfile(char const*, bool, bool, bool)
/usr/games/crawl-git-7711e572f3(_Z9read_mapsv+0x2a) [0x916b2a]: read_maps()
/usr/games/crawl-git-7711e572f3(_Z12startup_stepv+0x427) [0xb2ea67]: startup_step()
/usr/games/crawl-git-7711e572f3(main+0x109) [0x6215c9]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7f9623be2ead]: 
/usr/games/crawl-git-7711e572f3() [0x6227e9]

Trying to run gdb.