Obtained 25 stack frames.
/usr/games/crawl-0.16(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x646a23]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-0.16(_Z20crash_signal_handleri+0x174) [0x646d94]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x321e0) [0x7f160a7741e0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7f160aadcf6b]: 
/usr/games/crawl-0.16() [0x64d344]
/usr/games/crawl-0.16() [0x64d5aa]
/usr/games/crawl-0.16() [0x6353f6]
/usr/games/crawl-0.16(_Z11real_colourjRK9coord_def+0x22) [0x635572]: real_colour(unsigned int, coord_def const&)
/usr/games/crawl-0.16(_Z14get_cell_glyphRK9coord_defbi+0x14b) [0x9fc61b]: get_cell_glyph(coord_def const&, bool, int)
/usr/games/crawl-0.16(_Z10screenshotv+0x132) [0xae7fd2]: screenshot()
/usr/games/crawl-0.16(_Z13do_crash_dumpv+0x1f49) [0x64f719]: do_crash_dump()
/usr/games/crawl-0.16(_Z20crash_signal_handleri+0x74) [0x646c94]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x321e0) [0x7f160a7741e0]: 
/lib/x86_64-linux-gnu/libc.so.6(__write+0x10) [0x7f160a812830]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_write+0x43) [0x7f160a7b4af3]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x7276a) [0x7f160a7b476a]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_xsputn+0x1fe) [0x7f160a7b4a5e]: 
/lib/x86_64-linux-gnu/libc.so.6(fputs+0x9c) [0x7f160a7aa6ac]: 
/usr/games/crawl-0.16(_Z3endibPKcz+0x211) [0x6e0171]: end(int, bool, char const*, ...)
/usr/games/crawl-0.16(_Z9save_gamebPKc+0x160) [0x6fa7f0]: save_game(bool, char const*)
/usr/games/crawl-0.16() [0x835563]
/usr/games/crawl-0.16() [0x836305]
/usr/games/crawl-0.16(main+0x303) [0x5360a3]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7f160a760ead]: 
/usr/games/crawl-0.16() [0x5b235d]