perl-Test-TCP-2.02-2.fc21 can fail to build due to tests on slow machine like this: cannot open port: 50452 at /builddir/build/BUILD/Test-TCP-2.02/blib/lib/Test/TCP.pm line 51. Magic number checking on storable file failed at /usr/lib64/perl5/vendor_perl/Storable.pm line 399, at /usr/share/perl5/vendor_perl/Test/SharedFork/Store.pm line 51. END failed--call queue aborted at t/12_pass_wait_port_options.t line 51. t/12_pass_wait_port_options.t .. Dubious, test returned 255 (wstat 65280, 0xff00) All 24 subtests passed This caused by various time limits in t/12_pass_wait_port_options.t. If server process does not start listening on a TCP socket in time, the test will fail. This can be reproduced by adding "sleep 10;" just above t::Server->new() call.
I will apply the patch I proposed to the upstream without the documentation change not to encourage Fedora users to use the new feature.