Checking if your kit is complete...
Looks good
Writing Makefile for PerlIO::Via::MD5
cp lib/PerlIO/Via/MD5.pm blib/lib/PerlIO/Via/MD5.pm
Manifying blib/man3/PerlIO::Via::MD5.3
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/01basic...."my" variable $in masks earlier declaration in same scope at t/01basic.t line 17.
"my" variable $in masks earlier declaration in same scope at t/01basic.t line 23.
Unknown PerlIO layer "Via" at t/01basic.t line 9.

#     Failed test (t/01basic.t at line 9)
readline() on closed filehandle $in at t/01basic.t line 10.

#     Failed test (t/01basic.t at line 10)
#          got: undef
#     expected: '340771c82e0ed1630baa47ce4138efb3'

#     Failed test (t/01basic.t at line 14)
Unknown PerlIO layer "Via" at t/01basic.t line 17.

#     Failed test (t/01basic.t at line 17)
readline() on closed filehandle $in at t/01basic.t line 20.

#     Failed test (t/01basic.t at line 20)
#          got: undef
#     expected: 'NAdxyC4O0WMLqkfOQTjvsw'

#     Failed test (t/01basic.t at line 21)
Unknown PerlIO layer "Via" at t/01basic.t line 23.

#     Failed test (t/01basic.t at line 23)
readline() on closed filehandle $in at t/01basic.t line 24.

#     Failed test (t/01basic.t at line 24)
#          got: undef
#     expected: '4qÈ.ÑcªGÎA8ï³'

#     Failed test (t/01basic.t at line 25)
# Looks like you failed 9 tests of 13.
dubious
	Test returned status 9 (wstat 2304, 0x900)
DIED. FAILED tests 3-5, 7, 9-13
	Failed 9/13 tests, 30.77% okay
Failed Test Stat Wstat Total Fail  Failed  List of Failed
-------------------------------------------------------------------------------
t/01basic.t    9  2304    13    9  69.23%  3-5 7 9-13
Failed 1/1 test scripts, 0.00% okay. 9/13 subtests failed, 30.77% okay.
make: *** [test_dynamic] Error 9