Obtained 19 stack frames.
/usr/games/crawl-git-22bbcf646e(_Z17write_stack_traceP8_IO_FILEi+0x21) [0x55c1f1]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-22bbcf646e(_Z20crash_signal_handleri+0x1a8) [0x55c5b8]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7f44b2a7f4c0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7f44b2e15b7b]: 
/usr/games/crawl-git-22bbcf646e() [0x563b29]
/usr/games/crawl-git-22bbcf646e() [0x564084]
/usr/games/crawl-git-22bbcf646e(_Z20crash_signal_handleri+0x2c8) [0x55c6d8]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7f44b2a7f4c0]: 
/usr/games/crawl-git-22bbcf646e(_Z16handle_behaviourP7monster+0x1178) [0x7dbad8]: handle_behaviour(monster*)
/usr/games/crawl-git-22bbcf646e(_Z15behaviour_eventP7monster14mon_event_typePK5actor9coord_defb+0x328) [0x7de058]: behaviour_event(monster*, mon_event_type, actor const*, coord_def, bool)
/usr/games/crawl-git-22bbcf646e(_ZN10noise_grid19apply_noise_effectsERK9coord_defiRK7noise_ti+0xe7) [0x8fee47]: noise_grid::apply_noise_effects(coord_def const&, int, noise_t const&, int)
/usr/games/crawl-git-22bbcf646e(_ZN10noise_grid15propagate_noiseEv+0x1fa) [0x8ff05a]: noise_grid::propagate_noise()
/usr/games/crawl-git-22bbcf646e(_Z12apply_noisesv+0xe3) [0x8ff3b3]: apply_noises()
/usr/games/crawl-git-22bbcf646e(_Z15handle_monstersb+0xb71) [0x7d4e81]: handle_monsters(bool)
/usr/games/crawl-git-22bbcf646e(_Z12world_reactsv+0x132) [0x73aa82]: world_reacts()
/usr/games/crawl-git-22bbcf646e() [0x74278a]
/usr/games/crawl-git-22bbcf646e(main+0x605) [0x747605]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7f44b2a6a76d]: 
/usr/games/crawl-git-22bbcf646e() [0x4c07a9]