Obtained 24 stack frames.
/usr/games/crawl-git-2dfb4df3e3(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x5f74d3]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-2dfb4df3e3(_Z20crash_signal_handleri+0x174) [0x5f7844]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x324f0) [0x7f902df504f0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7f902e2b6efb]: 
/usr/games/crawl-git-2dfb4df3e3() [0x5fd384]
/usr/games/crawl-git-2dfb4df3e3() [0x5fd5ea]
/usr/games/crawl-git-2dfb4df3e3() [0x5e02b6]
/usr/games/crawl-git-2dfb4df3e3(_Z11real_colourjRK9coord_def+0x22) [0x5e0372]: real_colour(unsigned int, coord_def const&)
/usr/games/crawl-git-2dfb4df3e3(_Z14get_cell_glyphRK9coord_defbi+0x15b) [0x96001b]: get_cell_glyph(coord_def const&, bool, int)
/usr/games/crawl-git-2dfb4df3e3(_Z10screenshotv+0x16a) [0xa368da]: screenshot()
/usr/games/crawl-git-2dfb4df3e3(_Z13do_crash_dumpv+0x1e31) [0x5ff641]: do_crash_dump()
/usr/games/crawl-git-2dfb4df3e3(_Z20crash_signal_handleri+0x74) [0x5f7744]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x324f0) [0x7f902df504f0]: 
/lib/x86_64-linux-gnu/libc.so.6(__write+0x10) [0x7f902dfecaf0]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_write+0x43) [0x7f902df90e53]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x72aca) [0x7f902df90aca]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_xsputn+0x1fe) [0x7f902df90dbe]: 
/lib/x86_64-linux-gnu/libc.so.6(fputs+0x9c) [0x7f902df86a0c]: 
/usr/games/crawl-git-2dfb4df3e3(_Z3endibPKcz+0x20b) [0x9e6e8b]: end(int, bool, char const*, ...)
/usr/games/crawl-git-2dfb4df3e3(_Z9save_gamebPKc+0x1b5) [0x6a2725]: save_game(bool, char const*)
/usr/games/crawl-git-2dfb4df3e3() [0x7b72ed]
/usr/games/crawl-git-2dfb4df3e3(main+0x5cd) [0x4fbd6d]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7f902df3cead]: 
/usr/games/crawl-git-2dfb4df3e3() [0x56ff09]