I just installed Silverblue Fedora 30 OS as a HVM in Qubes. When I typed in rpm-ostree status, I get the following error:
Warning: failed to query journal: Cannot assign requested address (os error 99)
I also got the same warning when I installed Silverblue Fedora 30 as a Virtualbox guest in Windows 10.
Thanks in advance.
Did you try doing an rpm-ostree update?
This looks like https://github.com/projectatomic/rpm-ostree/issues/1729
The error message was a user permission issue. I was able to get around this warning by executing the command as root.