Your bug report

#20877: Building coreutils on ubuntu 15.04 64bit fails.

which was filed against the guix package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 20877@debbugs.gnu.org.

-- 
20877: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=20877
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