Sub::Uplevel is calling warnings which is calling perl-5.15.4, so I think that you have listed warnings somewhere in the autobundle. "warnings" is a core, nondual-lived module, so take warnings out of the bundle---that's my gut response. Or it might be easier to just do it in the shell:

cpan> install Catalyst::Runtime Catalyst::Devel
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But before you do that, here's a list of modules that you need for the tests:

#!/usr/bin/perl

use strict;
use warnings;
use CPAN;

CPAN::Shell->install(qw(
Test::More
Test::Pod
Test::Pod::Coverage
PadWalker
Pod::Usage
Getopt::Long
Devel::Cycle
Test::Memory::Cycle
Log::Dispatch::Array
Authen::Simple::Passwd
CGI::Emulate::PSGI
LWP::Protocol::http10
HTTP::Server::Simple::PSGI
FCGI::ProcManager
HTTP::Request::AsCGI
UNIVERSAL::ref
Test::HTTP
CatalystX::LeakChecker));
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At a minimum, here are some env vars that need to be set:

PERL_SIGNALS=safe
TEST_POD=1
TEST_POD_COVERAGE=1
TEST_MEMORY_CYCLE=1
TEST_HTTP=1
TEST_STRESS=1
TEST_THREADS=1
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And here's a list of problematic modules that probably need to be installed as notests:

#!/usr/bin/perl

use strict;
use warnings;
use CPAN;

CPAN::Shell->notest(qw(
install
Net::Server
HTTP::Server::Simple
HTTP::Server::Simple::PSGI
Starman
Twiggy));
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One more trick: If you want to install all the models in a namespace, let's say the Catalyst::Model namespace:

#!/usr/bin/perl

use strict;
use warnings;
use CPAN;

print $_->install
for CPAN::Shell->expand("Module", "/^Catalyst::Model/");
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And my favorite thing: the whole kaboodle:

#!/usr/bin/perl

use strict;
use warnings;
use CPAN;

print $_->install
for CPAN::Shell->expand("Module", "/^Catalyst/");
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