Make doc error 2.13.10

[Colin Campbell]

Good morning, all

After building LP 2.13.10 from git, I wanted an HTML copy of the docs, 
so I cd to /Documentation and did make doc. The result was a segfault: > 
[feta-alphabet20_7.029296875]Segmentation fault
> command failed: /home/colin/lilypond/out/bin/lilypond -dbackend=eps --formats=ps,png,pdf 
> -dinclude-eps-fonts -dgs-load-fonts --header=doctitle 
--header=doctitlefr --header=doctitlees
>--header=doctitlede --header=doctitlenl --header=doctitleja 
--header=doctitlehu
> --header=doctitleit --header=texidoc --header=texidocfr 
--header=texidoces
> --header=texidocde --header=texidocnl --header=texidocja 
--header=texidochu
> --header=texidocit -dcheck-internal-types -ddump-signatures 
-danti-alias-factor=2
> -I  "/home/colin/lilypond/out/lybook-db"  -I 
"/home/colin/lilypond/Documentation"
> -I  "/home/colin/lilypond/Documentation"  -I 
"/home/colin/lilypond/Documentation/out-www"
> -I  "/home/colin/lilypond/input"  -I 
"/home/colin/lilypond/Documentation"
> -I  "/home/colin/lilypond/Documentation/snippets"  -I 
"/home/colin/lilypond/input/regression"
> -I  "/home/colin/lilypond/Documentation/included"  -I 
"/home/colin/lilypond/mf/out"
> -I  "/home/colin/lilypond/mf/out"  -I 
"/home/colin/lilypond/Documentation/pictures"
> -I  "/home/colin/lilypond/Documentation/pictures/out-www" 
--formats=eps  --verbose
> -deps-box-padding=3.000000  -dread-file-list -dno-strip-output-dir
> 
"/home/colin/lilypond/out/lybook-db/snippet-names-5301286380616983105.ly"
> Child returned 139
> make[1]: *** [out-www/snippets.texi] Error 1
> make[1]: Leaving directory `/home/colin/lilypond/Documentation'
> make: *** [doc-stage-1] Error 2

The error is repeatable, at least to the extent that it has died the 
same way twice. I looked at each of the files in 
snippet-names-530...105.ly but nothing caught my admittedly untrained 
eye, barring the fact that the last few didn't produce any visible 
output under Frescobaldi.

I'm looking not so much for a specific answer as for an indication of 
the best place to begin; don't give me a fish, just help me to learn how 
to fish for myself, please!

pob hwyl!
Colin
--
A good juggler can always find work.
 - attributed to L. Pacioli (1445 - 1517)