Obtained 39 stack frames.
/usr/games/crawl-git-903b2947ba(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x5a05c74c88fe]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-903b2947ba(_Z20crash_signal_handleri+0x18f) [0x5a05c74c8d6f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7c4847229330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x7c4847282b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x7c484722927e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x7c484720c8ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x7c484720d7b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x7c484728cff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xad13c) [0x7c484729113c]: 
/lib/x86_64-linux-gnu/libc.so.6(realloc+0x255) [0x7c48472922f5]: 
/usr/games/crawl-git-903b2947ba(+0xccf854) [0x5a05c7ca5854]: 
/usr/games/crawl-git-903b2947ba(+0xcca7b5) [0x5a05c7ca07b5]: 
/usr/games/crawl-git-903b2947ba(+0xccb622) [0x5a05c7ca1622]: 
/usr/games/crawl-git-903b2947ba(+0xccb834) [0x5a05c7ca1834]: 
/usr/games/crawl-git-903b2947ba(+0xcca693) [0x5a05c7ca0693]: 
/usr/games/crawl-git-903b2947ba(+0xccbc74) [0x5a05c7ca1c74]: 
/usr/games/crawl-git-903b2947ba(lua_pcallk+0x95) [0x5a05c7c9df25]: 
/usr/games/crawl-git-903b2947ba(_ZN4CLua5pcallEii+0x60) [0x5a05c74ad8f0]: CLua::pcall(int, int)
/usr/games/crawl-git-903b2947ba(_ZN4CLua6callfnEPKcii+0xb4) [0x5a05c74af214]: CLua::callfn(char const*, int, int)
/usr/games/crawl-git-903b2947ba(_Z13do_crash_dumpv+0x1b84) [0x5a05c74d8284]: do_crash_dump()
/usr/games/crawl-git-903b2947ba(_Z20crash_signal_handleri+0x1fa) [0x5a05c74c8dda]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7c4847229330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x7c4847282b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x7c484722927e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x7c484720c8ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x7c484720d7b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x7c484728cff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab38c) [0x7c484728f38c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x7c4847291dae]: 
/usr/games/crawl-git-903b2947ba(+0x4d4c4e) [0x5a05c74aac4e]: 
/usr/games/crawl-git-903b2947ba(+0xccf819) [0x5a05c7ca5819]: 
/usr/games/crawl-git-903b2947ba(+0xccef76) [0x5a05c7ca4f76]: 
/usr/games/crawl-git-903b2947ba(+0xcd4c86) [0x5a05c7caac86]: 
/usr/games/crawl-git-903b2947ba(_ZN4CLua5closeEv+0xbe) [0x5a05c74afafe]: CLua::close()
/usr/games/crawl-git-903b2947ba(+0x2f3404) [0x5a05c72c9404]: 
/usr/games/crawl-git-903b2947ba(+0x2f63dc) [0x5a05c72cc3dc]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x7c484720e1ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x7c484720e28b]: 
/usr/games/crawl-git-903b2947ba(_start+0x25) [0x5a05c73fa675]: