Your package erlang-proper failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=12814299 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_24_Mass_Rebuild
Created attachment 1124474 [details] build.log
Created attachment 1124475 [details] root.log
Created attachment 1124476 [details] state.log
There is an upstream bug tracking this issue: https://github.com/manopapad/proper/issues/100 According to commenters, the package does build with the current master branch but not with any tagged release. There is another issue requesting a release: https://github.com/manopapad/proper/issues/114 Once upstream makes a new release that works with Erlang 18, I will be able to get it building here.
Upstream has not made a release, so I will need to alter the code downstream to build.
rbarlow's erlang-proper-1.1-5.fc24 completed http://koji.fedoraproject.org/koji/buildinfo?buildID=737528