Perl 5.22 testers needed!

Gentoo users rejoice, for a few days already we have Perl 5.22.0 packaged in the main tree. Since we don't know yet how much stuff will break because of the update, it is masked for now. Which means, we need daring testers (preferably running ~arch systems, stable is also fine but may need more work on your part to get things running) who unmask the new Perl, upgrade, and file bugs if needed!!!
Here's what you need in /etc/portage/package.unmask (and possibly package.accept_keywords) to get started (download); please always use the full block, since partial unmasking will lead to chaos. We're looking forward to your feedback!

# Perl 5.22.0 mask / unmask block
=dev-lang/perl-5.22.0
=virtual/perl-Archive-Tar-2.40.0
=virtual/perl-Attribute-Handlers-0.970.0
=virtual/perl-B-Debug-1.230.0
=virtual/perl-CPAN-2.110.0
=virtual/perl-CPAN-Meta-2.150.1
=virtual/perl-CPAN-Meta-Requirements-2.132.0
=virtual/perl-Carp-1.360.0
=virtual/perl-Compress-Raw-Bzip2-2.68.0
=virtual/perl-Compress-Raw-Zlib-2.68.0
=virtual/perl-DB_File-1.835.0
=virtual/perl-Data-Dumper-2.158.0
=virtual/perl-Devel-PPPort-3.310.0
=virtual/perl-Digest-MD5-2.540.0
=virtual/perl-Digest-SHA-5.950.0
=virtual/perl-Exporter-5.720.0
=virtual/perl-ExtUtils-CBuilder-0.280.221
=virtual/perl-ExtUtils-Command-1.200.0
=virtual/perl-ExtUtils-Install-2.40.0
=virtual/perl-ExtUtils-MakeMaker-7.40.100_rc
=virtual/perl-ExtUtils-ParseXS-3.280.0
=virtual/perl-File-Spec-3.560.0
=virtual/perl-Filter-Simple-0.920.0
=virtual/perl-Getopt-Long-2.450.0
=virtual/perl-HTTP-Tiny-0.54.0
=virtual/perl-IO-1.350.0
=virtual/perl-IO-Compress-2.68.0
=virtual/perl-IO-Socket-IP-0.370.0
=virtual/perl-JSON-PP-2.273.0
=virtual/perl-Locale-Maketext-1.260.0
=virtual/perl-MIME-Base64-3.150.0
=virtual/perl-Math-BigInt-1.999.700
=virtual/perl-Math-BigRat-0.260.800
=virtual/perl-Module-Load-Conditional-0.640.0
=virtual/perl-Module-Metadata-1.0.26
=virtual/perl-Perl-OSType-1.8.0
=virtual/perl-Pod-Escapes-1.70.0
=virtual/perl-Pod-Parser-1.630.0
=virtual/perl-Pod-Simple-3.290.0
=virtual/perl-Safe-2.390.0
=virtual/perl-Scalar-List-Utils-1.410.0
=virtual/perl-Socket-2.18.0
=virtual/perl-Storable-2.530.0
=virtual/perl-Term-ANSIColor-4.30.0
=virtual/perl-Term-ReadLine-1.150.0
=virtual/perl-Test-Harness-3.350.0
=virtual/perl-Test-Simple-1.1.14
=virtual/perl-Text-Balanced-2.30.0
=virtual/perl-Text-ParseWords-3.300.0
=virtual/perl-Time-Piece-1.290.0
=virtual/perl-Unicode-Collate-1.120.0
=virtual/perl-XSLoader-0.200.0
=virtual/perl-autodie-2.260.0
=virtual/perl-bignum-0.390.0
=virtual/perl-if-0.60.400
=virtual/perl-libnet-3.50.0
=virtual/perl-parent-0.232.0
=virtual/perl-threads-2.10.0
=virtual/perl-threads-shared-1.480.0
=dev-perl/Test-Tester-0.114.0
=dev-perl/Test-use-ok-0.160.0
# end of the Perl 5.22.0 mask / unmask block

After the update, first run

emerge --depclean --ask

and afterwards

perl-cleaner --all

perl-cleaner should not need to do anything, ideally. If you have depcleaned first and it still wants to rebuild something, that's a bug. Please file a bug report for the package that is getting rebuilt (but check our wiki page on known Perl 5.22 issues first to avoid duplicates).