Perl is now failing for me

I'm not sure when it started, but on everything more complicated than print 'Hello World' my perl is failing. For example: $ perl -e 'use DateTime;' Attempt to reload List/Util.pm aborted. Compilation failed in require at /usr/share/perl5/vendor_perl/namespace/ autoclean.pm line 11. BEGIN failed--compilation aborted at /usr/share/perl5/vendor_perl/namespace/ autoclean.pm line 11. Compilation failed in require at /usr/lib64/perl5/vendor_perl/DateTime.pm line 9. BEGIN failed--compilation aborted at /usr/lib64/perl5/vendor_perl/DateTime.pm line 9. Compilation failed in require at -e line 1. BEGIN failed--compilation aborted at -e line 1. or $ cpan Attempt to reload Scalar/Util.pm aborted. Compilation failed in require at /usr/share/perl5/Safe.pm line 4. BEGIN failed--compilation aborted at /usr/share/perl5/Safe.pm line 4. Compilation failed in require at /usr/share/perl5/vendor_perl/CPAN.pm line 57. BEGIN failed--compilation aborted at /usr/share/perl5/vendor_perl/CPAN.pm line 57. Compilation failed in require at /usr/share/perl5/vendor_perl/App/Cpan.pm line 290. BEGIN failed--compilation aborted at /usr/share/perl5/vendor_perl/App/Cpan.pm line 290. Compilation failed in require at /usr/bin/cpan line 7. BEGIN failed--compilation aborted at /usr/bin/cpan line 7. Since I last saw it working, all I can do is remember upgrading to F35, or the daily updates. Can anyone suggest where to start? For example... Why is it trying to reload Scalar::Util?