Description of problem:
My daily update with yum produces an error message:

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  Updating   : unbound-libs-1.4.20-6.fc19.x86_64                          42/92 
/usr/sbin/runuser: invalid option -- 'a'

Usage:
 runuser [options] -u <USER> COMMAND
 runuser [options] [-] [USER [arg]...]

Run COMMAND with the effective <user> id and group id. If -u not
given, fallback to su(1) compatible semantic and shell is executed.
The options -l, -c, -f, -s are mutually exclusive to -u.

Options:
 -u, --user <user>               username
 -m, -p, --preserve-environment  do not reset environment variables
 -g, --group <group>             specify the primary group
 -G, --supp-group <group>        specify a supplemental group

 -, -l, --login                  make the shell a login shell
 -c, --command <command>         pass a single command to the shell with -c
 --session-command <command>     pass a single command to the shell with -c
                                 and do not create a new session
 -f, --fast                      pass -f to the shell (for csh or tcsh)
 -s, --shell <shell>             run shell if /etc/shells allows it

 -h, --help     display this help and exit
 -V, --version  output version information and exit

For more details see runuser(1).
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Version-Release number of selected component (if applicable):
unbound-libs-1.4.20-6.fc19.x86_64

How reproducible:
did not try

Steps to Reproduce:
1.yum update
2.
3.
  
Actual results:
see description

Expected results:


Additional info: