Your package aws failed to build from source in current rawhide.
For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
Created attachment 903561 [details]
Created attachment 903562 [details]
Created attachment 903563 [details]
aws-3.1.0-12.fc21 has been submitted as an update for Fedora 21.
aws-3.1.0-12.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.