There is an ongoing outage on the primary CPAN mirror. It is possible to work around the issue by using MetaCPAN as a mirror.
Module Install Instructions
To install , copy and paste the appropriate command in to your terminal.
cpanm MJD/valgrind/ERRORS.tgz
perl -MCPAN -e shell
install MJD/valgrind/ERRORS.tgz
For more information on module installation, please visit the detailed CPAN module installation guide.