Maybe the perl that your super user runs is a different perl from what your user (sal) runs?

which perl
perl -V
[download]

and

sudo which perl
sudo perl -V
[download]

... should give different output in that case.

Update: Duh - it's right in your post:

/home/sal/perl5/lib/perl5/Module/Build.pm
[download]

This means that you installed Module::Build locally for user sal, but sudo cpanm ... likely doesn't see /home/sal/... in its search path.

I think you should install BioDBHTS the same way you installed Module::Build. Most likely simply by not using sudo but using plain cpanm.