CPANtesters failures, e.g.
<http://www.nntp.perl.org/group/perl.cpan.testers/2009/11/msg5841695.html>:
PERL_DL_NONLAZY=1 /home/perl5100/perl/bin/perl "-MExtUtils::Command::MM" "-e"
"test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
Can't locate object method "NAME" via package "B::SPECIAL" at
/home/perl5100/perl/cpan/build/Sepia-0.991-36HaCW/blib/lib/Sepia/Xref.pm line 262.
I think this only happens on threaded Perls.