Your configuration suggests that CPAN.pm should use a working
directory of
    /usr/src/cpan
Unfortunately we could not create the lock file
    /usr/src/cpan/.lock
due to permission problems.

Please make sure that the configuration variable
    $CPAN::Config->{cpan_home}
points to a directory where you can write a .lock file. You can set
this variable in either
    /usr/lib/perl5/CPAN/Config.pm
or
    /home/andrew/.cpan/CPAN/MyConfig.pm

Could not open >/usr/src/cpan/.lock: Permission denied