how guix 0.8.1 fails on Debian oldstable at the moment

test 0046...[HTTP, get cookies and store in cookie jar]

 46: protocol FAILED:
--- log/check-expected	2015-08-11 20:26:26.601137712 +0000
+++ log/check-generated	2015-08-11 20:26:26.601137712 +0000
@@ -1,5 +1,5 @@
 GET /want/46 HTTP/1.1[CR][LF]
 Host: 127.0.0.1:8990[CR][LF]
 Accept: */*[CR][LF]
-Cookie: empty=; mooo2=indeed2; mooo=indeed[CR][LF]
+Cookie: empty=[CR][LF]
 [CR][LF]

 - abort tests
TESTDONE: 45 tests out of 46 reported OK: 97%
TESTFAIL: These test cases failed: 46 
TESTDONE: 54 tests were considered during 19 seconds.
TESTINFO: 8 tests were skipped due to these restraints:
TESTINFO: "configured as DISABLED" 8 times (594, 836, 882, 938, 1209, 1211, 1316, 1512)
Makefile:746: recipe for target 'test' failed
make: *** [test] Error 1
make: Leaving directory '/tmp/nix-build-curl-7.40.0.drv-0/curl-7.40.0/tests'
phase `check' failed after 64 seconds
builder for `/gnu/store/l6bmwhmjz8nwfz3i95805jwl09k58zyx-curl-7.40.0.drv' failed with exit code 1
cannot build derivation `/gnu/store/nkldl2cj807lwmsp2frp84bmx60irzlk-cmake-2.8.12.drv': 1 dependencies couldn't be built
cannot build derivation `/gnu/store/32fxiiiippl811s0qdkf7f2myc8331fq-graphite2-1.2.4.drv': 1 dependencies couldn't be built
cannot build derivation `/gnu/store/jsr15r7rhn0mvppjbr94qf53gs9h7pbl-openjpeg-1.5.2.drv': 1 dependencies couldn't be built
cannot build derivation `/gnu/store/a3iacn7h976fyhfsf4zl5c9zal85h38z-texlive-2014.drv': 1 dependencies couldn't be built
cannot build derivation `/gnu/store/rx20m5cqnfj9yv1kchxr503bh9zm91d6-python-ipython-2.3.1.drv': 1 dependencies couldn't be built
cannot build derivation `/gnu/store/j8rmibh3qbm3411qcmwn8m8pv1hbg57g-profile.drv': 1 dependencies couldn't be built
guix package: error: build failed: build of `/gnu/store/j8rmibh3qbm3411qcmwn8m8pv1hbg57g-profile.drv' failed

real	9m5.628s
user	0m7.080s
sys	0m0.272s
: user@debian:~;