Obtained 25 stack frames.
/usr/games/crawl-git-cac7fed025(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x63e463]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-cac7fed025(_Z20crash_signal_handleri+0x174) [0x63e7d4]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x324f0) [0x7fc453b4c4f0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7fc453eb2efb]: 
/usr/games/crawl-git-cac7fed025() [0x644d84]
/usr/games/crawl-git-cac7fed025() [0x644fea]
/usr/games/crawl-git-cac7fed025() [0x62cea6]
/usr/games/crawl-git-cac7fed025(_Z11real_colourjRK9coord_def+0x22) [0x62d022]: real_colour(unsigned int, coord_def const&)
/usr/games/crawl-git-cac7fed025(_Z14get_cell_glyphRK9coord_defbi+0x14b) [0x9f124b]: get_cell_glyph(coord_def const&, bool, int)
/usr/games/crawl-git-cac7fed025(_Z10screenshotv+0x132) [0xaee0b2]: screenshot()
/usr/games/crawl-git-cac7fed025(_Z13do_crash_dumpv+0x1f39) [0x647149]: do_crash_dump()
/usr/games/crawl-git-cac7fed025(_Z20crash_signal_handleri+0x74) [0x63e6d4]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x324f0) [0x7fc453b4c4f0]: 
/lib/x86_64-linux-gnu/libc.so.6(__write+0x10) [0x7fc453be8af0]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_write+0x43) [0x7fc453b8ce53]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x72aca) [0x7fc453b8caca]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_xsputn+0x1fe) [0x7fc453b8cdbe]: 
/lib/x86_64-linux-gnu/libc.so.6(fputs+0x9c) [0x7fc453b82a0c]: 
/usr/games/crawl-git-cac7fed025(_Z3endibPKcz+0x211) [0x6d78d1]: end(int, bool, char const*, ...)
/usr/games/crawl-git-cac7fed025(_Z9save_gamebPKc+0x160) [0x6f2cb0]: save_game(bool, char const*)
/usr/games/crawl-git-cac7fed025() [0x82ca23]
/usr/games/crawl-git-cac7fed025() [0x82d7e5]
/usr/games/crawl-git-cac7fed025(main+0x303) [0x536eb3]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7fc453b38ead]: 
/usr/games/crawl-git-cac7fed025() [0x5a986d]