+ # This should be a "can't happen", but junk entries such as
+ # //lucasportal.info/blogs/payday-usa">'</a>night:G<a href="http://lucasportal.info/blogs/payday-usa">'</a>night/Illepeliz
+ # (yes, really) yield BIB-1 diagnostic 108 "Malformed query"
+ warn "registry search for record '$id' had error: '$@'";
+ return undef;