我使用 sudo cpanm -v Apache::Session::Memcached 在 Ubuntu 12.04 LTS 64 位下安装。我将在底部粘贴整个安装消息。我的猜测是它与测试有关，但不明白测试是什么以及它失败的原因，因为它不是我编写的测试并且随包一起提供。我的问题是：如何让它通过测试？如果我忽略测试并强制安装它，会不会有任何负面影响？
vagrant@precise64:~/application$ sudo cpanm -v Apache::Session::Memcached
cpanm (App::cpanminus) 1.7014 on perl 5.014002 built for x86_64-linux-gnu-thread-multi
Work directory is /home/vagrant/.cpanm/work/1414779306.19403
You have make /usr/bin/make
You have LWP 6.03
You have /bin/tar: tar (GNU tar) 1.26
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by John Gilmore and Jay Fenlason.
You have /usr/bin/unzip
Searching Apache::Session::Memcached on cpanmetadb ...
--> Working on Apache::Session::Memcached
Fetching http://www.cpan.org/authors/id/E/EN/ENRYS/Apache-Session-Memcached-0.03.tar.gz ... OK
Unpacking Apache-Session-Memcached-0.03.tar.gz
Apache-Session-Memcached-0.03/
Apache-Session-Memcached-0.03/t/
Apache-Session-Memcached-0.03/t/01cache.t
Apache-Session-Memcached-0.03/t/CONFIG
Apache-Session-Memcached-0.03/t/02flex.t
Apache-Session-Memcached-0.03/t/testlib.pl
Apache-Session-Memcached-0.03/t/00base.t
Apache-Session-Memcached-0.03/lib/
Apache-Session-Memcached-0.03/lib/Apache/
Apache-Session-Memcached-0.03/lib/Apache/Session/
Apache-Session-Memcached-0.03/lib/Apache/Session/Store/
Apache-Session-Memcached-0.03/lib/Apache/Session/Store/Memcached.pm
Apache-Session-Memcached-0.03/lib/Apache/Session/Memcached.pm
Apache-Session-Memcached-0.03/MANIFEST
Apache-Session-Memcached-0.03/Changes
Apache-Session-Memcached-0.03/README
Apache-Session-Memcached-0.03/META.yml
Apache-Session-Memcached-0.03/Makefile.PL
Entering Apache-Session-Memcached-0.03
Checking configure dependencies from META.yml
Running Makefile.PL
Configuring Apache-Session-Memcached-0.03 ... Checking if your kit is complete...
Looks good
Generating a Unix-style Makefile
Writing Makefile for Apache::Session::Memcached
Writing MYMETA.yml and MYMETA.json
OK
Checking dependencies from MYMETA.json ...
Checking if you have Cache::Memcached 1.14 ... Yes (1.30)
Checking if you have ExtUtils::MakeMaker 0 ... Yes (7.00)
Checking if you have Apache::Session 1.54 ... Yes (1.93)
Building and testing Apache-Session-Memcached-0.03 ... cp lib/Apache/Session/Store/Memcached.pm blib/lib/Apache/Session/Store/Memcached.pm
cp lib/Apache/Session/Memcached.pm blib/lib/Apache/Session/Memcached.pm
Manifying 2 pod documents
PERL_DL_NONLAZY=1 "/usr/bin/perl" "-MExtUtils::Command::MM" "-MTest::Harness" "-e" "undef *Test::Harness::Switches; test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
t/00base.t ... ok
t/01cache.t .. 1/4 Object does not exist in data store. at /home/vagrant/.cpanm/work/1414779306.19403/Apache-Session-Memcached-0.03/blib/lib/Apache/Session/Store/Memcached.pm line 44, <CFG> line 1.
t/01cache.t .. Dubious, test returned 111 (wstat 28416, 0x6f00)
Failed 2/4 subtests
t/02flex.t ... 1/4 Object does not exist in data store. at /home/vagrant/.cpanm/work/1414779306.19403/Apache-Session-Memcached-0.03/blib/lib/Apache/Session/Store/Memcached.pm line 44, <CFG> line 1.
t/02flex.t ... Dubious, test returned 111 (wstat 28416, 0x6f00)
Failed 2/4 subtests
Test Summary Report
-------------------
t/01cache.t (Wstat: 28416 Tests: 2 Failed: 0)
Non-zero exit status: 111
Parse errors: Bad plan. You planned 4 tests but ran 2.
t/02flex.t (Wstat: 28416 Tests: 2 Failed: 0)
Non-zero exit status: 111
Parse errors: Bad plan. You planned 4 tests but ran 2.
Files=3, Tests=5, 0 wallclock secs ( 0.02 usr 0.01 sys + 0.14 cusr 0.02 csys = 0.19 CPU)
Result: FAIL
Failed 2/3 test programs. 0/5 subtests failed.
make: *** [test_dynamic] Error 111
FAIL
! Installing Apache::Session::Memcached failed. See /home/vagrant/.cpanm/work/1414779306.19403/build.log for details. Retry with --force to force install it.