Obtained 32 stack frames.
/usr/games/crawl-git-3aa3f5dc57(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x5cfcf3]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-3aa3f5dc57(_Z20crash_signal_handleri+0x1a5) [0x5d0095]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7f959da8e4c0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7f959de24b7b]: 
/usr/games/crawl-git-3aa3f5dc57() [0x5d6639]
/usr/games/crawl-git-3aa3f5dc57() [0x5d6b84]
/usr/games/crawl-git-3aa3f5dc57(_Z20crash_signal_handleri+0x2c8) [0x5d01b8]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7f959da8e4c0]: 
/lib/x86_64-linux-gnu/libc.so.6(towlower+0x59) [0x7f959db4e529]: 
/usr/games/crawl-git-3aa3f5dc57(_Z16lowercase_stringRKSs+0x39) [0xa71579]: lowercase_string(std::string const&)
/usr/games/crawl-git-3aa3f5dc57(_Z18mutation_from_nameSsbPSt6vectorI13mutation_typeSaIS0_EE+0x1c1) [0x93c681]: mutation_from_name(std::string, bool, std::vector<mutation_type, std::allocator<mutation_type> >*)
/usr/games/crawl-git-3aa3f5dc57() [0x7c9eb6]
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xc23c) [0x7f959f39923c]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0x16d88) [0x7f959f3a3d88]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xc64d) [0x7f959f39964d]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xb8d7) [0x7f959f3988d7]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xc802) [0x7f959f399802]: 
/usr/lib/x86_64-linux-gnu/liblua5.1.so.0(lua_pcall+0x51) [0x7f959f395361]: 
/usr/games/crawl-git-3aa3f5dc57(_ZN4CLua9calltopfnEP9lua_StatePKcP13__va_list_tagiPA1_S4_+0x55) [0x5bb745]: CLua::calltopfn(lua_State*, char const*, __va_list_tag*, int, __va_list_tag (*) [1])
/usr/games/crawl-git-3aa3f5dc57(_ZN4CLua11callmaybefnEPKcS1_P13__va_list_tag+0x10a) [0x5bc04a]: CLua::callmaybefn(char const*, char const*, __va_list_tag*)
/usr/games/crawl-git-3aa3f5dc57(_ZN4CLua11callmaybefnEPKcS1_z+0x82) [0x5bc172]: CLua::callmaybefn(char const*, char const*, ...)
/usr/games/crawl-git-3aa3f5dc57(_Z21item_needs_autopickupRK8item_defb+0x1c2) [0x7745a2]: item_needs_autopickup(item_def const&, bool)
/usr/games/crawl-git-3aa3f5dc57(_Z18tile_draw_map_cellRK9coord_defb+0x750) [0xb245c0]: tile_draw_map_cell(coord_def const&, bool)
/usr/games/crawl-git-3aa3f5dc57(_Z14show_update_atRK9coord_def13enum_bitfieldI10layer_typeLi5EE+0x29d) [0x9d8c4d]: show_update_at(coord_def const&, enum_bitfield<layer_type, 5>)
/usr/games/crawl-git-3aa3f5dc57(_Z9show_init13enum_bitfieldI10layer_typeLi5EE+0x8a) [0x9d993a]: show_init(enum_bitfield<layer_type, 5>)
/usr/games/crawl-git-3aa3f5dc57(_Z10viewwindowbbP9animation+0xc5) [0xad66c5]: viewwindow(bool, bool, animation*)
/usr/games/crawl-git-3aa3f5dc57() [0xbad2c4]
/usr/games/crawl-git-3aa3f5dc57() [0xbb4cde]
/usr/games/crawl-git-3aa3f5dc57() [0xbb5f15]
/usr/games/crawl-git-3aa3f5dc57(main+0x2eb) [0xbb95fb]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7f959da7976d]: 
/usr/games/crawl-git-3aa3f5dc57() [0x536109]