Checking if your kit is complete...
Warning: prerequisite Data::Dumper 2.121 not found at /home/cpanrun/build/5.6.1/lib/5.6.1/ExtUtils/MakeMaker.pm line 343.
Looks good
Writing Makefile for Clone::Weakref
cp lib/Clone/Weakref.pm blib/lib/Clone/Weakref.pm
/home/cpanrun/build/5.6.1/bin/perl -I/home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi -I/home/cpanrun/build/5.6.1/lib/5.6.1 /home/cpanrun/build/5.6.1/lib/5.6.1/ExtUtils/xsubpp  -typemap /home/cpanrun/build/5.6.1/lib/5.6.1/ExtUtils/typemap Weakref.xs > Weakref.xsc && mv Weakref.xsc Weakref.c
gcc -c  -DUSE_REENTRANT_API -D_GNU_SOURCE -D_REENTRANT -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O3   -DVERSION=\"0.01\" -DXS_VERSION=\"0.01\" -fpic -I/home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi/CORE  Weakref.c
Running Mkbootstrap for Clone::Weakref ()
chmod 644 Weakref.bs
rm -f blib/arch/auto/Clone/Weakref/Weakref.so
LD_RUN_PATH="" gcc  -shared Weakref.o  -o blib/arch/auto/Clone/Weakref/Weakref.so     
chmod 755 blib/arch/auto/Clone/Weakref/Weakref.so
cp Weakref.bs blib/arch/auto/Clone/Weakref/Weakref.bs
chmod 644 blib/arch/auto/Clone/Weakref/Weakref.bs
Manifying blib/man3/Clone::Weakref.3
PERL_DL_NONLAZY=1 /home/cpanrun/build/5.6.1/bin/perl -Iblib/arch -Iblib/lib -I/home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi -I/home/cpanrun/build/5.6.1/lib/5.6.1 -e 'use Test::Harness qw(&runtests $verbose); $verbose=0; runtests @ARGV;' t/*.t
t/Clone-Weakref.....Data::Dumper version 2.121 required--this is only version 2.102 at t/Clone-Weakref.t line 113.
BEGIN failed--compilation aborted at t/Clone-Weakref.t line 113.
dubious
	Test returned status 255 (wstat 65280, 0xff00)
FAILED--1 test script could be run, alas--no output ever seen
make: *** [test_dynamic] Error 2