Make check failure

[Blake M. <bl...@mc...>]

Hi,

make check passed a week ago but is failing now (64 bit LinuxMint 17.1):

[...]
Welcome to GNU CLISP 2.49.60+ (2017-06-25) <http://clisp.org/>

Copyright (c) Bruno Haible, Michael Stoll 1992-1993
Copyright (c) Bruno Haible, Marcus Daniels 1994-1997
Copyright (c) Bruno Haible, Pierpaolo Bernardi, Sam Steingold 1998
Copyright (c) Bruno Haible, Sam Steingold 1999-2000
Copyright (c) Sam Steingold, Bruno Haible 2001-2018

Type :h and hit Enter for context help.

;; connecting to
"http://clisp.org/beta/impnotes/id-href.map"...connected...HTTP/1.1
301 Moved Permanently --> "
https://clisp.sourceforge.io/beta/impnotes/id-href.map"
;; connecting to "http://clisp.orghttps://
clisp.sourceforge.io/beta/impnotes/id-href.map"...
*** - PARSE-INTEGER: substring "" does not have integer syntax at position 0

Bye.
make: *** [check-doc] Error 1