pungi.global.log
[OSTREE_INSTALLER] [INFO ] [FAIL] Ostree installer (variant AtomicHost, arch aarch64) failed, but going on anyway. [OSTREE_INSTALLER] [INFO ] Runroot task failed: 29378649. See /mnt/koji/compose/updates/Fedora-29-updates-testing-20180830.0/logs/aarch64/AtomicHost/ostree_installer-1/runroot.log for more details.
[INFO ] [FAIL] Image build (variant AtomicHost, arch ppc64le, subvariant AtomicHost) failed, but going on anyway. [IMAGE_BUILD ] [INFO ] Hardlinking /mnt/koji/packages/Fedora-AtomicHost/29_Update/20180830.0/images/Fedora-AtomicHost-29_Update-20180830.0.aarch64.qcow2 to /mnt/koji/compose/updates/Fedora-29-updates-testing-20180830.0/compose/AtomicHost/aarch64/images/Fedora-AtomicHost-29_Update-20180830.0.aarch64.qcow2
2018-08-30 14:04:32,740: installpkg grub2-tools-efi installpkg grub2-tools-efi 2018-08-30 14:04:32,741: Exception: Required installpkg failed.
I think this one is known already
The other one is the ppc64le qemu bug