Obtained 25 stack frames.
/usr/games/crawl-0.16(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x646a73]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-0.16(_Z20crash_signal_handleri+0x174) [0x646de4]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x35180) [0x7ffea9584180]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7ffea990779b]: 
/usr/games/crawl-0.16() [0x64d394]
/usr/games/crawl-0.16() [0x64d5fa]
/usr/games/crawl-0.16() [0x635446]
/usr/games/crawl-0.16(_Z11real_colourjRK9coord_def+0x22) [0x6355c2]: real_colour(unsigned int, coord_def const&)
/usr/games/crawl-0.16(_Z14get_cell_glyphRK9coord_defbi+0x14b) [0x9fc40b]: get_cell_glyph(coord_def const&, bool, int)
/usr/games/crawl-0.16(_Z10screenshotv+0x132) [0xae7d22]: screenshot()
/usr/games/crawl-0.16(_Z13do_crash_dumpv+0x1f49) [0x64f769]: do_crash_dump()
/usr/games/crawl-0.16(_Z20crash_signal_handleri+0x74) [0x646ce4]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x35180) [0x7ffea9584180]: 
/lib/x86_64-linux-gnu/libc.so.6(__write+0x10) [0x7ffea9628620]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_write+0x43) [0x7ffea95c3473]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x73b33) [0x7ffea95c2b33]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_xsputn+0x186) [0x7ffea95c3a86]: 
/lib/x86_64-linux-gnu/libc.so.6(fputs+0x94) [0x7ffea95b93d4]: 
/usr/games/crawl-0.16(_Z3endibPKcz+0x211) [0x6e0101]: end(int, bool, char const*, ...)
/usr/games/crawl-0.16(_Z9save_gamebPKc+0x160) [0x6fa780]: save_game(bool, char const*)
/usr/games/crawl-0.16() [0x8354f3]
/usr/games/crawl-0.16() [0x836295]
/usr/games/crawl-0.16(main+0x303) [0x536103]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7ffea9570b45]: 
/usr/games/crawl-0.16() [0x5b23bc]