Your package coan failed to build from source in current rawhide. https://koji.fedoraproject.org/koji/taskinfo?taskID=17712190 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild
Created attachment 1251633 [details] build.log
Created attachment 1251634 [details] root.log
Created attachment 1251635 [details] state.log
This bug appears to have been reported against 'rawhide' during the Fedora 26 development cycle. Changing version to '26'.
filiperosset's coan-6.0.1-11.fc27 completed http://koji.fedoraproject.org/koji/buildinfo?buildID=909319
workaround http://pkgs.fedoraproject.org/cgit/rpms/coan.git/commit/?id=28ee91500ba9da35a8ea2f35bac12ebe31e57b79