2.13.16 crashes while processing old good file (2.8.8 and 2.12.3 do not)

[Dmytro O. Redchuk]

Hi.

  My problem (again, yes, my own,) now is that 2.13.16 crashes on a
file, which can happily be compiled with 2.12.3 and 2.8.8 (2.13.0
segfaults, did not try others yet).

  Having no idea how to debug, i would like to ask what can i do to
narrow down this problem.

  (Stripping the code to three stave "do not help" --- the problem
disappears). Btw, uncommenting page-count and commenting out
system-count gives strange result: lilypond says "Solving 2
page-breaking chunks...[1: 3 pages][2: 3 pages]" but produces 6 pages
pdf (some pages with 1 system only).

  I've attached the (a bit stripped) source and log file.

  Please, help :-)

  Thank you, really.

-- 
  Dmytro O. Redchuk

Shcho_to_za_predyvo.err
Description: Text document

Shcho_to_za_predyvo.ly
Description: Text Data