The spec file tries to remove the src/json and src/lua paths[1], but the bundled libraries were moved to lib/jsoncpp and lib/lua and another library was added at lib/gmp. LuaJIT, JsonCpp and GMP are provided by system packages, so the directories can be removed. [1]: https://src.fedoraproject.org/cgit/rpms/minetest.git/tree/minetest.spec?id=6d63094d5415209b5f05355f43d12f6fc9805bc8#n73
minetest-0.4.16-2.fc26 has been submitted as an update to Fedora 26. https://bodhi.fedoraproject.org/updates/FEDORA-2017-4049c680bb
minetest-0.4.16-2.fc26 has been pushed to the Fedora 26 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-4049c680bb
minetest-0.4.16-2.fc26 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report.