Puppet users - May 2013 - intstall gcc-4.7 on Jenkins Ubuntu slave

Hi,

I am trying to install gcc-4.7 on Ubuntu in puppet. Ubuntu comes with 
gcc-4.6.3 as default. I have following puppet code:

    apt::ppa {"ppa:ubuntu-toolchain-r/test":
    }   
    package {["gcc-4.7", "g\+\+-4.7"]: 
      ensure => installed, 
      require => [Apt::Ppa["ppa:ubuntu-toolchain-r/test"],
Exec["apt-get -y
update"]]
    }   

When I test it I get this error message. Please advise if anyone has tried 
to install gcc4.7 in puppet.

Error: Execution of ''/usr/bin/apt-get -q -y -o 
DPkg::Options::=--force-confold install gcc-4.7'' returned 100: Reading 
package lists...
Building dependency tree...
Reading state information...
The following extra packages will be installed:
  cpp-4.7 gcc-4.7-base gcc-4.8-base libgcc-4.7-dev libgcc1 libgomp1 libitm1
  libquadmath0
Suggested packages:
  gcc-4.7-locales gcc-4.7-multilib libmudflap0-4.7-dev gcc-4.7-doc 
libgcc1-dbg
  libgomp1-dbg libitm1-dbg libquadmath0-dbg libmudflap0-dbg libcloog-ppl0
  libppl-c4 libppl9 libpwl5 binutils-gold
The following NEW packages will be installed:
  cpp-4.7 gcc-4.7 gcc-4.8-base libgcc-4.7-dev libitm1
The following packages will be upgraded:
  gcc-4.7-base libgcc1 libgomp1 libquadmath0
4 upgraded, 5 newly installed, 0 to remove and 107 not upgraded.
Need to get 14.2 MB of archives.
After this operation, 32.1 MB of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
  gcc-4.8-base libgcc1 libgomp1 libitm1 libquadmath0 gcc-4.7-base cpp-4.7
  libgcc-4.7-dev gcc-4.7
E: There are problems and -y was used without --force-yes

-- 
You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to puppet-users+unsubscribe@googlegroups.com.
To post to this group, send email to puppet-users@googlegroups.com.
Visit this group at http://groups.google.com/group/puppet-users?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.