Tests seem to fail, but are passed as ok

[itkovian]

test_save_and_load (test.cache.TestCache)
Check if the loaded data is the same as the saved data. ... 2015-11-23 11:45:01,676 WARNING    setup.FileCache MainThread  Could not access the file cache at /var/folders/dr/3fvg7z716x3118j15w2vyxw00000gn/T/tmpN0dno7/tmpKGwlNc [[Errno 2] No such file or directory: '/var/folders/dr/3fvg7z716x3118j15w2vyxw00000gn/T/tmpN0dno7/tmpKGwlNc']
ok
test_cache (test.nagios.TestNagios)
Test the caching mechanism in the reporter. ... 2015-11-23 11:45:01,684 WARNING    setup.FileCache MainThread  Could not access the file cache at /var/folders/dr/3fvg7z716x3118j15w2vyxw00000gn/T/tmpIe3Jn6 [[Errno 2] No such file or directory: '/var/folders/dr/3fvg7z716x3118j15w2vyxw00000gn/T/tmpIe3Jn6']
ok

This seems to be an error, I think.