Obtained 22 stack frames.
/usr/games/crawl-git-786489fb3b(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x59c253]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-786489fb3b(_Z20crash_signal_handleri+0x1a5) [0x59c5f5]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7fc6a85734c0]: 
/usr/games/crawl-git-786489fb3b(_ZNKSt8_Rb_treeI20dungeon_feature_typeSt4pairIKS0_SsESt10_Select1stIS3_ESt4lessIS0_ESaIS3_EE4findERS2_+0x24) [0x60a384]: std::_Rb_tree<dungeon_feature_type, std::pair<dungeon_feature_type const, std::string>, std::_Select1st<std::pair<dungeon_feature_type const, std::string> >, std::less<dungeon_feature_type>, std::allocator<std::pair<dungeon_feature_type const, std::string> > >::find(dungeon_feature_type const&) const
/usr/games/crawl-git-786489fb3b(_Z23raw_feature_descriptionRK9coord_def+0x7c) [0x5fee9c]: raw_feature_description(coord_def const&)
/usr/games/crawl-git-786489fb3b(_Z13do_crash_dumpv+0xead) [0x5a452d]: do_crash_dump()
/usr/games/crawl-git-786489fb3b(_Z20crash_signal_handleri+0x9c) [0x59c4ec]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7fc6a85734c0]: 
/lib/x86_64-linux-gnu/libc.so.6(__write+0x10) [0x7fc6a8622100]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_write+0x43) [0x7fc6a85b6313]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x791da) [0x7fc6a85b61da]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_xsputn+0x23e) [0x7fc6a85b6c8e]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x4d016) [0x7fc6a858a016]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_vfprintf+0x59e) [0x7fc6a8584c1e]: 
/lib/x86_64-linux-gnu/libc.so.6(__fprintf_chk+0xeb) [0x7fc6a86448cb]: 
/usr/games/crawl-git-786489fb3b(_Z3endibPKcz+0x237) [0x636e47]: end(int, bool, char const*, ...)
/usr/games/crawl-git-786489fb3b(_Z9save_gamebPKc+0x156) [0x658b26]: save_game(bool, char const*)
/usr/games/crawl-git-786489fb3b() [0x78f6e3]
/usr/games/crawl-git-786489fb3b() [0x7903dd]
/usr/games/crawl-git-786489fb3b(main+0x303) [0x7931c3]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7fc6a855e76d]: 
/usr/games/crawl-git-786489fb3b() [0x504579]