Obtained 24 stack frames.
/usr/games/crawl-git-d2883c70a1(_Z17write_stack_traceP8_IO_FILEi+0x21) [0x55bc71]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-d2883c70a1(_Z20crash_signal_handleri+0x1a8) [0x55c038]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7fcfd4a8a4c0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7fcfd4e20b7b]: 
/usr/games/crawl-git-d2883c70a1() [0x5635f9]
/usr/games/crawl-git-d2883c70a1() [0x5638d7]
/usr/games/crawl-git-d2883c70a1() [0x543ef6]
/usr/games/crawl-git-d2883c70a1(_Z11real_colourjRK9coord_def+0x22) [0x544252]: real_colour(unsigned int, coord_def const&)
/usr/games/crawl-git-d2883c70a1(_Z14get_cell_glyphRK9coord_defbi+0x4b6) [0x905b46]: get_cell_glyph(coord_def const&, bool, int)
/usr/games/crawl-git-d2883c70a1(_Z10screenshotv+0x1a5) [0x9e17c5]: screenshot()
/usr/games/crawl-git-d2883c70a1(_Z13do_crash_dumpv+0x1d0f) [0x56586f]: do_crash_dump()
/usr/games/crawl-git-d2883c70a1(_Z20crash_signal_handleri+0x9c) [0x55bf2c]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7fcfd4a8a4c0]: 
/lib/x86_64-linux-gnu/libc.so.6(__write+0x10) [0x7fcfd4b39100]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_write+0x43) [0x7fcfd4acd313]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x791da) [0x7fcfd4acd1da]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_xsputn+0x23e) [0x7fcfd4acdc8e]: 
/lib/x86_64-linux-gnu/libc.so.6(fputs+0x9d) [0x7fcfd4ac307d]: 
/usr/games/crawl-git-d2883c70a1(_Z3endibPKcz+0x221) [0x993cc1]: end(int, bool, char const*, ...)
/usr/games/crawl-git-d2883c70a1(_Z9save_gamebPKc+0x1b5) [0x616f55]: save_game(bool, char const*)
/usr/games/crawl-git-d2883c70a1() [0x741bff]
/usr/games/crawl-git-d2883c70a1(main+0x625) [0x746b95]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7fcfd4a7576d]: 
/usr/games/crawl-git-d2883c70a1() [0x4c0709]