Can't upgrade F21 to F22

[CLOSE Dave]

Output below. This has been repeated all day. Any thoughts?
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[root at dsusim ~]# cat /etc/fedora-release
Fedora release 21 (Twenty One)

[root at dsusim ~]# fedup --clean
resetting bootloader config
removing boot images
removing downloaded packages
removing miscellaneous files

[root at dsusim ~]# yum update
Loaded plugins: langpacks
No packages marked for update

[root at dsusim ~]# fedup --network 22
setting up repos...
default-installrepo/metalink                            |  14 kB  00:00
default-installrepo                                     | 3.6 kB  00:00
default-installrepo/group_gz                            | 106 kB  00:04
default-installrepo/primary_db                          | 1.4 MB  00:37
fedora/22/x86_64/metalink                               |  14 kB  00:00
fedora/22/x86_64                                        | 3.8 kB  00:00
fedora/22/x86_64/group_gz                               | 230 kB  00:03
fedora/22/x86_64/primary_db                             |  18 MB  07:45
google-chrome                                           |  951 B  00:00
google-chrome/primary                                   | 1.8 kB  00:00
rpmfusion-free/22/x86_64                                | 3.0 kB  00:00
rpmfusion-free/22/x86_64/primary_db                     | 337 kB  00:04
rpmfusion-free-updates/22/x86_64                        | 3.0 kB  00:00
rpmfusion-free-updates/22/x86_64/primary_db             |  70 kB  00:02
rpmfusion-nonfree/22/x86_64                             | 3.0 kB  00:00
rpmfusion-nonfree/22/x86_64/primary_db                  | 101 kB  00:01
rpmfusion-nonfree-updates/22/x86_64                     | 3.0 kB  00:00
rpmfusion-nonfree-updates/22/x86_64/primary_db          |  29 kB  00:00
updates/22/x86_64/metalink                              |  13 kB  00:00
updates/22/x86_64                                       | 4.7 kB  00:00
updates/22/x86_64/group_gz                              | 230 kB  00:01
updates/22/x86_64/updateinfo                            | 814 kB  00:17
updates/22/x86_64/primary_db                            | 6.9 MB  02:32
getting boot images...
.treeinfo.signed                                        | 2.0 kB  00:00

Downloading failed: couldn't get boot images: No more mirrors to try.
Last error was: [Errno 14] HTTP Error 503 - Service Unavailable
====
Debuglog shows that fedup tried at least 34 systems.
-- 
Dave Close