Checking if your kit is complete...
Looks good
Writing Makefile for Sys::Prctl

Microsoft (R) Program Maintenance Utility Version 7.10.3077
Copyright (C) Microsoft Corporation.  All rights reserved.

cp lib/Sys/Prctl.pm blib\lib\Sys\Prctl.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/critic..........1..0 # Skip Test::Perl::Critic required to criticise code
skipped
        all skipped: Test::Perl::Critic required to criticise code
t/name............1..8
The syscall function is unimplemented at C:\cpanrun\depot\main\contrib-patched\perl\CPAN\src\Sys-Prctl\blib\lib/Sys/Prctl.pm line 189.
pid: 7640, t/name.t
# Looks like your test died before it could output anything.
dubious
	Test returned status 255 (wstat 65280, 0xff00)
DIED. FAILED tests 1-8
	Failed 8/8 tests, 0.00% okay
t/pod-coverage....1..0 # Skip Test::Pod::Coverage 1.04 required for testing POD coverage
skipped
        all skipped: Test::Pod::Coverage 1.04 required for testing POD coverage
t/pod.............1..1
ok 1 - blib\lib\Sys\Prctl.pm
ok
Failed Test Stat Wstat Total Fail  List of Failed
-------------------------------------------------------------------------------
t/name.t     255 65280     8   16  1-8
2 tests skipped.
Failed 1/4 test scripts. 8/9 subtests failed.
Files=4, Tests=9,  1 wallclock secs ( 0.00 cusr +  0.00 csys =  0.00 CPU)
Failed 1/4 test programs. 8/9 subtests failed.
NMAKE : fatal error U1077: 'C:\cpanrun\build\5-10-0\bin\perl.exe' : return code '0xff'
Stop.