Smoke [5.10.1] perl-5.10.1-1-gca8de22 FAIL(F) MSWin32 WinXP/.Net SP3 (x86/2 cpu)

Automated smoke report for 5.10.1 patch ca8de220718ba91d5a5fdd9779497cd5b0250258 perl-5.10.1-1-gca8de22
maldoror.bath.planit.group: Intel(R) Core(TM)2 CPU 6700 @ 2.66GHz(~2660 MHz) (x86/2 cpu)
    on        MSWin32 - WinXP/.Net SP3
    using     cl version 13.10.3077
    smoketime 4 hours 40 minutes (average 28 minutes 3 seconds)

Summary: FAIL(F)

O = OK  F = Failure(s), extended report at the bottom
X = Failure(s) under TEST but not under harness
? = still running or test results not (yet) available
Build failures during:       - = unknown or N/A
c = Configure, m = make, M = make (after miniperl), t = make test-prep

perl-5.10.1-1-gca8de22  Configuration (common) -DCCTYPE=MSVC70FREE -DINST_TOP=$(INST_DRV)\Smoke\doesntexist
----------- ---------------------------------------------------------
O O         -Duselargefiles
O O         -Duselargefiles -Dusemymalloc
O O         -Duselargefiles -Duseithreads -Uuseimpsys
O O         -Duselargefiles -Duseithreads -Uuseimpsys -Dusemymalloc
F O         -Duselargefiles -Duseithreads
| +--------- -DDEBUGGING
+----------- no debugging


Locally applied patches:
    SMOKEca8de220718ba91d5a5fdd9779497cd5b0250258

Failures: (common-args) -DCCTYPE=MSVC70FREE -DINST_TOP=$(INST_DRV)\Smoke\doesntexist
[default] -Duselargefiles -Duseithreads
../ext/IO/t/io_sock.t.......................................FAILED

Compiler messages(MSWin32):
Cwd.xs(77) : warning C4101: 'symlink' : unreferenced local variable
ListUtil.xs(197) : warning C4101: 'magic' : unreferenced local variable
Peek.c(391) : warning C4090: 'function' : different 'const' qualifiers

-- 
Report by Test::Smoke v1.42 build 1267 running on perl 5.11.0
(Reporter v0.035 / Smoker v0.045)