Checking if your kit is complete... Looks good Writing Makefile for Thread::Needs Microsoft (R) Program Maintenance Utility Version 7.10.3077 Copyright (C) Microsoft Corporation. All rights reserved. cp lib/Thread/Needs.pm blib\lib\Thread\Needs.pm Microsoft (R) Program Maintenance Utility Version 7.10.3077 Copyright (C) Microsoft Corporation. All rights reserved. C:\cpanrun\build\5-10-0\bin\perl.exe "-MExtUtils::Command::MM" "-e" "test_harness(1, 'blib\lib', 'blib\arch')" t/*.t t/Needs....1..15 ok 1 - use threads; ok 2 ok 3 - use Thread::Needs; ok 4 - Thread::Needs->can(...) Can't use an undefined value as a symbol reference at C:/cpanrun/build/5-10-0/lib/Symbol.pm line 153. dubious Test returned status 255 (wstat 65280, 0xff00) DIED. FAILED tests 5-15 Failed 11/15 tests, 26.67% okay Failed Test Stat Wstat Total Fail List of Failed ------------------------------------------------------------------------------- t/Needs.t 255 65280 15 22 5-15 Failed 1/1 test scripts. 11/15 subtests failed. Files=1, Tests=15, 0 wallclock secs ( 0.00 cusr + 0.00 csys = 0.00 CPU) Failed 1/1 test programs. 11/15 subtests failed. NMAKE : fatal error U1077: 'C:\cpanrun\build\5-10-0\bin\perl.exe' : return code '0xff' Stop.