Changelog for rustc-bootstrap-1_22-1.22.1-1.1.x86_64.rpm :

* Wed May 23 2018 mmanu84AATToutlook.de- Add _constraints file to avoid build failure for ppc64 and ppc64le
* Fri Nov 24 2017 mmanu84AATToutlook.de- Create 1.22 bootstrap