Starting download of /gnu/store/xi3hw3hirgaj1b0s5j1bwrhgrk7jv6if-potrace-1.16.tar.gz
From http://downloads.sourceforge.net/project/potrace/1.16/potrace-1.16.tar.gz...
following redirection to `https://nav.dl.sourceforge.net/project/potrace/1.16/potrace-1.16.tar.gz'...

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