Tests fail (with Google::ProtocolBuffers 0.12?)

[eserte]

See subject. Test log:

#   Failed test 'Riak/Client.pm loaded ok'
#   at t/00-compile.t line 36.
#          got: '512'
#     expected: '0'
Can't use string ("1") as an ARRAY ref while "strict refs" in use at /opt/perl-5.24.1-RC4/lib/site_perl/5.24.1/Google/ProtocolBuffers.pm line 308.
Compilation failed in require at /tmpfs/.cpan-build-cpansand/2016102621/Riak-Client-1.96-0/blib/lib/Riak/Client.pm line 12.
BEGIN failed--compilation aborted at /tmpfs/.cpan-build-cpansand/2016102621/Riak-Client-1.96-0/blib/lib/Riak/Client.pm line 12.
Compilation failed in require at -e line 1.

#   Failed test 'Riak/Client/PBC.pm loaded ok'
#   at t/00-compile.t line 36.
#          got: '512'
#     expected: '0'
Can't use string ("1") as an ARRAY ref while "strict refs" in use at /opt/perl-5.24.1-RC4/lib/site_perl/5.24.1/Google/ProtocolBuffers.pm line 308.
Compilation failed in require at -e line 1.
# Looks like you failed 2 tests of 2.
t/00-compile.t ............ 
Dubious, test returned 2 (wstat 512, 0x200)
Failed 2/2 subtests 
...

Google::ProtocolBuffers 0.12 seems also to break other distributions, see
csirtgadgets/google-protocolbuffers-perl#24