Obtained 24 stack frames.
/usr/games/crawl-git-5aee7720d2(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x5f6183]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-5aee7720d2(_Z20crash_signal_handleri+0x174) [0x5f64f4]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x324f0) [0x7f4ea59bd4f0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7f4ea5d23efb]: 
/usr/games/crawl-git-5aee7720d2() [0x5fc034]
/usr/games/crawl-git-5aee7720d2() [0x5fc29a]
/usr/games/crawl-git-5aee7720d2() [0x5df146]
/usr/games/crawl-git-5aee7720d2(_Z11real_colourjRK9coord_def+0x22) [0x5df302]: real_colour(unsigned int, coord_def const&)
/usr/games/crawl-git-5aee7720d2(_Z14get_cell_glyphRK9coord_defbi+0x15b) [0x9596fb]: get_cell_glyph(coord_def const&, bool, int)
/usr/games/crawl-git-5aee7720d2(_Z10screenshotv+0x16a) [0xa2b31a]: screenshot()
/usr/games/crawl-git-5aee7720d2(_Z13do_crash_dumpv+0x1eb7) [0x5fe377]: do_crash_dump()
/usr/games/crawl-git-5aee7720d2(_Z20crash_signal_handleri+0x74) [0x5f63f4]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x324f0) [0x7f4ea59bd4f0]: 
/lib/x86_64-linux-gnu/libc.so.6(__write+0x10) [0x7f4ea5a59af0]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_write+0x43) [0x7f4ea59fde53]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x72aca) [0x7f4ea59fdaca]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_xsputn+0x1fe) [0x7f4ea59fddbe]: 
/lib/x86_64-linux-gnu/libc.so.6(fputs+0x9c) [0x7f4ea59f3a0c]: 
/usr/games/crawl-git-5aee7720d2(_Z3endibPKcz+0x20b) [0x9dbfdb]: end(int, bool, char const*, ...)
/usr/games/crawl-git-5aee7720d2(_Z9save_gamebPKc+0x121) [0x6a18c1]: save_game(bool, char const*)
/usr/games/crawl-git-5aee7720d2() [0x7b3e2d]
/usr/games/crawl-git-5aee7720d2(main+0x5cd) [0x4fba1d]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7f4ea59a9ead]: 
/usr/games/crawl-git-5aee7720d2() [0x56fed9]