This is an auto-filled bug because dev-python/colorspacious fails tests (hang). The issue was originally discovered on x86, but it may be reproducible on other arches as well. If you think that a different summary clarifies the issue better, feel free to change it. Attached build log and emerge --info. NOTE: I had to kill the process.
Created attachment 638084 [details] build.log build log and emerge --info
Could you try again? I've added '-v' to nosetests, so the log might be more useful. However, I suspect this is some problem inside numpy.
Closing bugs that don't clearly indicate applicable version. Assuming a new one will be open if the issue persists.