Checking if your kit is complete...
Looks good
Writing Makefile for revphone

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

Math::BigInt: couldn't load specified math lib(s), fallback to Math::BigInt::FastCalc at C:/cpanrun/build/5-10-0/site/lib/Win32API/File.pm line 20
cp lib/revphone.pm blib\lib\revphone.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/revphone....1..1

#   Failed test at t/revphone.t line 18.
not ok 1
# Looks like you failed 1 test of 1.
dubious
	Test returned status 1 (wstat 256, 0x100)
DIED. FAILED test 1
	Failed 1/1 tests, 0.00% okay
Failed Test  Stat Wstat Total Fail  List of Failed
-------------------------------------------------------------------------------
t/revphone.t    1   256     1    1  1
Failed 1/1 test scripts. 1/1 subtests failed.
Files=1, Tests=1,  2 wallclock secs ( 0.00 cusr +  0.00 csys =  0.00 CPU)
Failed 1/1 test programs. 1/1 subtests failed.
NMAKE : fatal error U1077: 'C:\cpanrun\build\5-10-0\bin\perl.exe' : return code '0x1'
Stop.