root@boosa-ubuntu:~# do-release-upgrade -d
Checking for a new Ubuntu release
MetaRelease.__init__() useDevel=True useProposed=False
/etc/update-manager/meta-release: http://changelogs.ubuntu.com/meta-release
/etc/update-manager/meta-release: http://changelogs.ubuntu.com/meta-release-lts
/etc/update-manager/meta-release: -development
/etc/update-manager/meta-release: -proposed
metarelease-uri: http://changelogs.ubuntu.com/meta-release-development
MetaRelease.download()
have self.metarelease_information
MetaRelease.parse()
current dist name: 'precise'
current dist not found in meta-release file