Obtained 27 stack frames.
/usr/games/crawl-git-786489fb3b(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x59c253]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-786489fb3b(_Z20crash_signal_handleri+0x1a5) [0x59c5f5]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7fa73901c4c0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7fa7393b2b7b]: 
/usr/games/crawl-git-786489fb3b() [0x5a3149]
/usr/games/crawl-git-786489fb3b() [0x5a33f1]
/usr/games/crawl-git-786489fb3b() [0x58a6e7]
/usr/games/crawl-git-786489fb3b(_Z11real_colourjRK9coord_def+0x22) [0x58aa02]: real_colour(unsigned int, coord_def const&)
/usr/games/crawl-git-786489fb3b(_Z14get_cell_glyphRK9coord_defbi+0x15b) [0x95fa9b]: get_cell_glyph(coord_def const&, bool, int)
/usr/games/crawl-git-786489fb3b(_Z10screenshotv+0x132) [0xa5b9b2]: screenshot()
/usr/games/crawl-git-786489fb3b(_Z13do_crash_dumpv+0x2111) [0x5a5791]: do_crash_dump()
/usr/games/crawl-git-786489fb3b(_Z20crash_signal_handleri+0x9c) [0x59c4ec]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7fa73901c4c0]: 
/lib/x86_64-linux-gnu/libc.so.6(__write+0x10) [0x7fa7390cb100]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_write+0x43) [0x7fa73905f313]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x791da) [0x7fa73905f1da]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_xsputn+0x23e) [0x7fa73905fc8e]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x4d016) [0x7fa739033016]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_vfprintf+0x59e) [0x7fa73902dc1e]: 
/lib/x86_64-linux-gnu/libc.so.6(__fprintf_chk+0xeb) [0x7fa7390ed8cb]: 
/usr/games/crawl-git-786489fb3b(_Z3endibPKcz+0x237) [0x636e47]: end(int, bool, char const*, ...)
/usr/games/crawl-git-786489fb3b(_Z9save_gamebPKc+0x156) [0x658b26]: save_game(bool, char const*)
/usr/games/crawl-git-786489fb3b() [0x78f6e3]
/usr/games/crawl-git-786489fb3b() [0x7903dd]
/usr/games/crawl-git-786489fb3b(main+0x303) [0x7931c3]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7fa73900776d]: 
/usr/games/crawl-git-786489fb3b() [0x504579]