Obtained 24 stack frames.
/usr/games/crawl-git-c18c9f84a6(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x5f7543]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-c18c9f84a6(_Z20crash_signal_handleri+0x174) [0x5f78b4]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x324f0) [0x7f56b81f14f0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7f56b8557efb]: 
/usr/games/crawl-git-c18c9f84a6() [0x5fd3f4]
/usr/games/crawl-git-c18c9f84a6() [0x5fd65a]
/usr/games/crawl-git-c18c9f84a6() [0x5e0066]
/usr/games/crawl-git-c18c9f84a6(_Z11real_colourjRK9coord_def+0x22) [0x5e0122]: real_colour(unsigned int, coord_def const&)
/usr/games/crawl-git-c18c9f84a6(_Z14get_cell_glyphRK9coord_defbi+0x15b) [0x95ee8b]: get_cell_glyph(coord_def const&, bool, int)
/usr/games/crawl-git-c18c9f84a6(_Z10screenshotv+0x16a) [0xa31ada]: screenshot()
/usr/games/crawl-git-c18c9f84a6(_Z13do_crash_dumpv+0x1fcf) [0x5ff84f]: do_crash_dump()
/usr/games/crawl-git-c18c9f84a6(_Z20crash_signal_handleri+0x6a) [0x5f77aa]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x324f0) [0x7f56b81f14f0]: 
/lib/x86_64-linux-gnu/libc.so.6(__write+0x10) [0x7f56b828daf0]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_write+0x43) [0x7f56b8231e53]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x72aca) [0x7f56b8231aca]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_xsputn+0x1fe) [0x7f56b8231dbe]: 
/lib/x86_64-linux-gnu/libc.so.6(fputs+0x9c) [0x7f56b8227a0c]: 
/usr/games/crawl-git-c18c9f84a6(_Z3endibPKcz+0x20b) [0x9e227b]: end(int, bool, char const*, ...)
/usr/games/crawl-git-c18c9f84a6(_Z9save_gamebPKc+0x1b5) [0x6a3485]: save_game(bool, char const*)
/usr/games/crawl-git-c18c9f84a6() [0x7b7cfd]
/usr/games/crawl-git-c18c9f84a6(main+0x5cd) [0x4fbf9d]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7f56b81ddead]: 
/usr/games/crawl-git-c18c9f84a6() [0x5709a9]