Lots of packages to update but a number of -devel's are needed and not available:
MIRROR] libart_lgpl-devel-2.3.22-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://tde-mirror.yosemite.net/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_... (3/236): libmemcached-libs-1.0.18-14.fc29.x86_64.rpm
318 kB/s | 130 kB 00:00 [MIRROR] libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://tde-mirror.yosemite.net/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_... [MIRROR] libart_lgpl-devel-2.3.22-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://kuiper.mirrorservice.org/sites/trinitydesktop.org/trinity/trinity/rpm... [MIRROR] libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://kuiper.mirrorservice.org/sites/trinitydesktop.org/trinity/trinity/rpm... (4/236): libyaz-5.14.11-14.fc29.x86_64.rpm
885 kB/s | 466 kB 00:00 [MIRROR] libtqt4-devel-4.2.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://kuiper.mirrorservice.org/sites/trinitydesktop.org/trinity/trinity/rpm... [MIRROR] libtqt4-devel-4.2.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://tde-mirror.yosemite.net/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_... [MIRROR] libart_lgpl-devel-2.3.22-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://copernicus.mirrorservice.org/sites/trinitydesktop.org/trinity/trinity... [MIRROR] libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://copernicus.mirrorservice.org/sites/trinitydesktop.org/trinity/trinity... [MIRROR] libtqt4-devel-4.2.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://copernicus.mirrorservice.org/sites/trinitydesktop.org/trinity/trinity... [MIRROR] libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://mirror.ntmm.org/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_64/libtq... [MIRROR] libart_lgpl-devel-2.3.22-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://mirror.ntmm.org/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_64/libar... [MIRROR] libtqt4-devel-4.2.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://mirror.ntmm.org/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_64/libtq... [MIRROR] libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://ftp.fau.de/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_64/libtqt3-mt... [FAILED] libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm: No more mirrors to try - All mirrors were already tried without success (6-7/236): libtqt4-devel-4.2.0-14.0.6_1.fc29.x86_64.rpm 0% [
] 1.1 MB/s | 1.2 MB 05:15 ETA The downloaded packages were saved in cache until the next successful transaction. You can remove cached packages by executing 'dnf clean packages'. Error: Error downloading packages: Cannot download libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm: All mirrors were tried