cpanspec version is 1.78-25.fc25.

If I do 'cpanspec Mojo::SQLite' followed by 'rpmbuild -ba perl-Mojo-SQLite.spec'
...
+ cd Mojo-SQLite-2.001
+ rm -rf /home/speech/bradyc/rpms/BUILDROOT/perl-Mojo-SQLite-2.001-1.fc25.x86_64
+ ./Build install destdir=/home/speech/bradyc/rpms/BUILDROOT/perl-Mojo-SQLite-2.001-1.fc25.x86_64 create_packlist=0
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
ERROR: Can't create '/usr/local/share/man/man3'
Do not have write permissions on '/usr/local/share/man/man3'
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 at /usr/share/perl5/vendor_perl/Module/Build/Tiny.pm line 119.
error: Bad exit status from /var/tmp/rpm-tmp.Xa08Ob (%install)


RPM build errors:
    Bad exit status from /var/tmp/rpm-tmp.Xa08Ob (%install)
bash-4.3$
...

The problem can be fixed via these changes in the generated spec file:

--- perl-Mojo-SQLite.spec	2017-05-29 12:53:13.916904000 -0400
+++ perl-Mojo-SQLite.spec.fixed	2017-05-29 12:52:29.284925000 -0400
@@ -45,13 +45,13 @@
 %setup -q -n Mojo-SQLite-%{version}
 
 %build
-%{__perl} Build.PL installdirs=vendor
+%{__perl} Build.PL --installdirs=vendor
 ./Build
 
 %install
 rm -rf $RPM_BUILD_ROOT
 
-./Build install destdir=$RPM_BUILD_ROOT create_packlist=0
+./Build install --destdir=$RPM_BUILD_ROOT --create_packlist=0
 find $RPM_BUILD_ROOT -depth -type d -exec rmdir {} 2>/dev/null \;
 
 %{_fixperms} $RPM_BUILD_ROOT/*

This is a known problem upstream, and a fix has been provided.

https://github.com/silug/cpanspec/pull/5/files

There are other bugfixes available here as well:

https://github.com/silug/cpanspec/commits/