Obtained 24 stack frames.
/usr/games/crawl-git-54a05abb72(_Z17write_stack_traceP8_IO_FILEi+0x21) [0x55fbb1]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-54a05abb72(_Z20crash_signal_handleri+0x1a8) [0x55ff78]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7f6c961694c0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7f6c964ffb7b]: 
/usr/games/crawl-git-54a05abb72() [0x567549]
/usr/games/crawl-git-54a05abb72() [0x567827]
/usr/games/crawl-git-54a05abb72() [0x547d16]
/usr/games/crawl-git-54a05abb72(_Z11real_colourjRK9coord_def+0x22) [0x548072]: real_colour(unsigned int, coord_def const&)
/usr/games/crawl-git-54a05abb72(_Z14get_cell_glyphRK9coord_defbi+0x53e) [0x9087be]: get_cell_glyph(coord_def const&, bool, int)
/usr/games/crawl-git-54a05abb72(_Z10screenshotv+0x1a5) [0x9e5015]: screenshot()
/usr/games/crawl-git-54a05abb72(_Z13do_crash_dumpv+0x1cff) [0x5697af]: do_crash_dump()
/usr/games/crawl-git-54a05abb72(_Z20crash_signal_handleri+0x9c) [0x55fe6c]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7f6c961694c0]: 
/lib/x86_64-linux-gnu/libc.so.6(__write+0x10) [0x7f6c96218100]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_write+0x43) [0x7f6c961ac313]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x791da) [0x7f6c961ac1da]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_xsputn+0x23e) [0x7f6c961acc8e]: 
/lib/x86_64-linux-gnu/libc.so.6(fputs+0x9d) [0x7f6c961a207d]: 
/usr/games/crawl-git-54a05abb72(_Z3endibPKcz+0x22b) [0x60149b]: end(int, bool, char const*, ...)
/usr/games/crawl-git-54a05abb72(_Z9save_gamebPKc+0x1b7) [0x61a027]: save_game(bool, char const*)
/usr/games/crawl-git-54a05abb72() [0x74454f]
/usr/games/crawl-git-54a05abb72(main+0x64d) [0x7494cd]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7f6c9615476d]: 
/usr/games/crawl-git-54a05abb72() [0x4c1129]