Obtained 36 stack frames.
/usr/games/crawl-0.34(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x5ec986f59a9e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x18f) [0x5ec986f59f0f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x724686642910]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11b) [0x72468669999b]: 
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x724686642866]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xd7) [0x7246866268b7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x27750) [0x724686627750]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa3c67) [0x7246866a3c67]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa5ea4) [0x7246866a5ea4]: 
/lib/x86_64-linux-gnu/libc.so.6(free+0x73) [0x7246866a87f3]: 
/usr/games/crawl-0.34(_Z17get_last_messagesB5cxx11ib+0x526) [0x5ec9872c6fe6]: get_last_messages[abi:cxx11](int, bool)
/usr/games/crawl-0.34(_Z13do_crash_dumpv+0xaa4) [0x5ec986f68364]: do_crash_dump()
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x1fa) [0x5ec986f59f7a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x724686642910]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11b) [0x72468669999b]: 
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x724686642866]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xd7) [0x7246866268b7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x27750) [0x724686627750]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa3c67) [0x7246866a3c67]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa5ea4) [0x7246866a5ea4]: 
/lib/x86_64-linux-gnu/libc.so.6(free+0x73) [0x7246866a87f3]: 
/usr/games/crawl-0.34(_ZN12text_patternD1Ev+0x21) [0x5ec98743a0f1]: text_pattern::~text_pattern()
/usr/games/crawl-0.34(+0x76c25d) [0x5ec9871d125d]: 
/usr/games/crawl-0.34(+0xcd72c3) [0x5ec98773c2c3]: 
/usr/games/crawl-0.34(+0xcd75c4) [0x5ec98773c5c4]: 
/usr/games/crawl-0.34(+0xcd6423) [0x5ec98773b423]: 
/usr/games/crawl-0.34(+0xcd7a04) [0x5ec98773ca04]: 
/usr/games/crawl-0.34(+0xcd8e46) [0x5ec98773de46]: 
/usr/games/crawl-0.34(+0xcdacd8) [0x5ec98773fcd8]: 
/usr/games/crawl-0.34(+0xce09f6) [0x5ec9877459f6]: 
/usr/games/crawl-0.34(_ZN4CLua5closeEv+0xbe) [0x5ec986f40bce]: CLua::close()
/usr/games/crawl-0.34(+0x2f501c) [0x5ec986d5a01c]: 
/usr/games/crawl-0.34(+0x2f7ff1) [0x5ec986d5cff1]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x7246866280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x724686628189]: 
/usr/games/crawl-0.34(_start+0x25) [0x5ec986e8bf95]: