Checking if your kit is complete...
Looks good
Writing Makefile for Benchmark::Thread::Size
cp lib/Benchmark/Thread/Size.pm blib/lib/Benchmark/Thread/Size.pm
Manifying blib/man3/Benchmark::Thread::Size.3
PERL_DL_NONLAZY=1 /Users/cpanrun/pristine/5.8.7/bin/perl "-MExtUtils::Command::MM" "-e" "test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
t/Size01....Performing each test 2 times
(ref)  1   0   1A thread exited while 2 threads were running.
make: *** [test_dynamic] Hangup