Obtained 25 stack frames.
/usr/games/crawl-git-1f4be75a9a(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x646703]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-1f4be75a9a(_Z20crash_signal_handleri+0x174) [0x646a74]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x321e0) [0x7fe705b301e0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7fe705e98f6b]: 
/usr/games/crawl-git-1f4be75a9a() [0x64d024]
/usr/games/crawl-git-1f4be75a9a() [0x64d28a]
/usr/games/crawl-git-1f4be75a9a() [0x6350d6]
/usr/games/crawl-git-1f4be75a9a(_Z11real_colourjRK9coord_def+0x22) [0x635252]: real_colour(unsigned int, coord_def const&)
/usr/games/crawl-git-1f4be75a9a(_Z14get_cell_glyphRK9coord_defbi+0x14b) [0x9fb0eb]: get_cell_glyph(coord_def const&, bool, int)
/usr/games/crawl-git-1f4be75a9a(_Z10screenshotv+0x132) [0xae68c2]: screenshot()
/usr/games/crawl-git-1f4be75a9a(_Z13do_crash_dumpv+0x1f49) [0x64f3f9]: do_crash_dump()
/usr/games/crawl-git-1f4be75a9a(_Z20crash_signal_handleri+0x74) [0x646974]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x321e0) [0x7fe705b301e0]: 
/lib/x86_64-linux-gnu/libc.so.6(__write+0x10) [0x7fe705bce830]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_write+0x43) [0x7fe705b70af3]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x7276a) [0x7fe705b7076a]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_xsputn+0x1fe) [0x7fe705b70a5e]: 
/lib/x86_64-linux-gnu/libc.so.6(fputs+0x9c) [0x7fe705b666ac]: 
/usr/games/crawl-git-1f4be75a9a(_Z3endibPKcz+0x211) [0x6dfd21]: end(int, bool, char const*, ...)
/usr/games/crawl-git-1f4be75a9a(_Z9save_gamebPKc+0x160) [0x6fb1b0]: save_game(bool, char const*)
/usr/games/crawl-git-1f4be75a9a() [0x834ed3]
/usr/games/crawl-git-1f4be75a9a() [0x835c75]
/usr/games/crawl-git-1f4be75a9a(main+0x303) [0x535e23]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7fe705b1cead]: 
/usr/games/crawl-git-1f4be75a9a() [0x5b1ffd]