Checking if your kit is complete...
Looks good
Writing Makefile for Tie::Concurrent
 contains: D:\cpanrun\depot\main\Apps\CPAN_Run\lib d:/cpanrun/build/5-6-1/lib d:/cpanrun/build/5-6-1/site/lib .) at (eval 4) line 3.
cp Concurrent.pm blib\lib\Tie\Concurrent.pm
cp torture.pl blib\lib\Tie\torture.pl
rosoft Corp 1988-1998. All rights reserved.

	D:\cpanrun\build\5-6-1\bin\perl.exe -Iblib\arch -Iblib\lib -Id:\cpanrun\build\5-6-1\lib -Id:\cpanrun\build\5-6-1\lib test.pl
1..1Can't locate GDBM_File.pm in @INC (@INC contains: blib\arch blib\lib d:\cpanrun\build\5-6-1\lib d:\cpanrun\build\5-6-1\lib D:\cpanrun\depot\main\Apps\CPAN_Run\lib D:/cpanrun/build/5-6-1/lib D:/cpanrun/build/5-6-1/site/lib .) at test.pl line 21.
BEGIN failed--compilation aborted at test.pl line 21.
NMAKE : fatal error U1077: 'D:\cpanrun\build\5-6-1\bin\perl.exe' : return code '0x2'
Stop.