On copr builders, there is currently dnf-1.1.9-2, which causes this build: https://copr-be.cloud.fedoraproject.org/results/tartare/netdata/ fedora-26-x86_64/00506909-netdata/ to fail due to Bug 1096506 (fixed in dnf-1.1.10-3). For the build to pass, we need to ensure dnf is latest on builders.