Obtained 26 stack frames.
/usr/games/crawl-git-aa1c49c134(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x57ef23]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-aa1c49c134(_Z20crash_signal_handleri+0x1a5) [0x57f2c5]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7f4a051764c0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7f4a0550cb7b]: 
/usr/games/crawl-git-aa1c49c134() [0x585ad9]
/usr/games/crawl-git-aa1c49c134() [0x585d81]
/usr/games/crawl-git-aa1c49c134() [0x567ed7]
/usr/games/crawl-git-aa1c49c134(_Z11real_colourjRK9coord_def+0x22) [0x568052]: real_colour(unsigned int, coord_def const&)
/usr/games/crawl-git-aa1c49c134(_Z14get_cell_glyphRK9coord_defbi+0x15b) [0x90ddab]: get_cell_glyph(coord_def const&, bool, int)
/usr/games/crawl-git-aa1c49c134(_Z10screenshotv+0x13a) [0x9edb5a]: screenshot()
/usr/games/crawl-git-aa1c49c134(_Z13do_crash_dumpv+0x1f41) [0x587f51]: do_crash_dump()
/usr/games/crawl-git-aa1c49c134(_Z20crash_signal_handleri+0x9c) [0x57f1bc]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7f4a051764c0]: 
/lib/x86_64-linux-gnu/libc.so.6(__write+0x10) [0x7f4a05225100]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_write+0x43) [0x7f4a051b9313]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x791da) [0x7f4a051b91da]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_xsputn+0x23e) [0x7f4a051b9c8e]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x4d016) [0x7f4a0518d016]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_vfprintf+0x59e) [0x7f4a05187c1e]: 
/lib/x86_64-linux-gnu/libc.so.6(__fprintf_chk+0xeb) [0x7f4a052478cb]: 
/usr/games/crawl-git-aa1c49c134(_Z3endibPKcz+0x237) [0x619fd7]: end(int, bool, char const*, ...)
/usr/games/crawl-git-aa1c49c134(_Z9save_gamebPKc+0x156) [0x6371c6]: save_game(bool, char const*)
/usr/games/crawl-git-aa1c49c134() [0x7532bd]
/usr/games/crawl-git-aa1c49c134(main+0x5e5) [0x756375]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7f4a0516176d]: 
/usr/games/crawl-git-aa1c49c134() [0x4ec469]