Obtained 25 stack frames.
/usr/games/crawl-git-056651fa57(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x5f5e93]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-056651fa57(_Z20crash_signal_handleri+0x174) [0x5f6204]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x324f0) [0x7f9a187fc4f0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7f9a18b62efb]: 
/usr/games/crawl-git-056651fa57() [0x5fbe54]
/usr/games/crawl-git-056651fa57() [0x5fc0ba]
/usr/games/crawl-git-056651fa57() [0x5de736]
/usr/games/crawl-git-056651fa57(_Z11real_colourjRK9coord_def+0x22) [0x5de8f2]: real_colour(unsigned int, coord_def const&)
/usr/games/crawl-git-056651fa57(_Z14get_cell_glyphRK9coord_defbi+0x15b) [0x96896b]: get_cell_glyph(coord_def const&, bool, int)
/usr/games/crawl-git-056651fa57(_Z10screenshotv+0x172) [0xa435b2]: screenshot()
/usr/games/crawl-git-056651fa57(_Z13do_crash_dumpv+0x1ea7) [0x5fe157]: do_crash_dump()
/usr/games/crawl-git-056651fa57(_Z20crash_signal_handleri+0x74) [0x5f6104]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x324f0) [0x7f9a187fc4f0]: 
/lib/x86_64-linux-gnu/libc.so.6(__write+0x10) [0x7f9a18898af0]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_write+0x43) [0x7f9a1883ce53]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x72aca) [0x7f9a1883caca]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_xsputn+0x1fe) [0x7f9a1883cdbe]: 
/lib/x86_64-linux-gnu/libc.so.6(fputs+0x9c) [0x7f9a18832a0c]: 
/usr/games/crawl-git-056651fa57(_Z3endibPKcz+0x20b) [0x9f302b]: end(int, bool, char const*, ...)
/usr/games/crawl-git-056651fa57(_Z9save_gamebPKc+0x152) [0x6a7012]: save_game(bool, char const*)
/usr/games/crawl-git-056651fa57() [0x7be622]
/usr/games/crawl-git-056651fa57() [0x7bf10d]
/usr/games/crawl-git-056651fa57(main+0x2f9) [0x4fc419]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7f9a187e8ead]: 
/usr/games/crawl-git-056651fa57() [0x56e4bd]