perl: warning: Falling back to the standard locale ("C").

Setting up base-files (3.1.13ubuntu2) ...
Installing new version of config file /etc/issue ...
Installing new version of config file /etc/issue.net ...
Installing new version of config file /etc/lsb-release ...

(Reading database ... 96894 files and directories currently installed.)
Preparing to replace bash 3.1-2ubuntu10 (using .../bash_3.1-5ubuntu3_i386.deb) ...
Unpacking replacement bash ...
Setting up bash (3.1-5ubuntu3) ...
Installing new version of config file /etc/bash.bashrc ...
Installing new version of config file /etc/bash_completion ...
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "en_AU:en",
        LC_ALL = (unset),
        LANG = "en_AU.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

(Reading database ... 96895 files and directories currently installed.)
Preparing to replace bsdutils 1:2.12r-4ubuntu6 (using .../bsdutils_1%3a2.12r-11ubuntu2_i386.deb) ...
Unpacking replacement bsdutils ...
Setting up bsdutils (2.12r-11ubuntu2) ...

(Reading database ... 96895 files and directories currently installed.)
Preparing to replace coreutils 5.93-5ubuntu4 (using .../coreutils_5.96-5ubuntu4_i386.deb) ...
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "en_AU:en",
        LC_ALL = (unset),
        LANG = "en_AU.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
Unpacking replacement coreutils ...
Setting up coreutils (5.96-5ubuntu4) ...
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "en_AU:en",
        LC_ALL = (unset),
        LANG = "en_AU.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

(Reading database ... 96900 files and directories currently installed.)
Preparing to replace findutils 4.2.27-1ubuntu1 (using .../findutils_4.2.27-3_i386.deb) ...
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "en_AU:en",
        LC_ALL = (unset),
        LANG = "en_AU.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "en_AU:en",
        LC_ALL = (unset),
        LANG = "en_AU.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
Unpacking replacement findutils ...
Setting up findutils (4.2.27-3) ...
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "en_AU:en",
        LC_ALL = (unset),
        LANG = "en_AU.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").