Issues after running make installworld

I've just tried to do a make installworld DESTDIR=$jail1 where jail1='/var/lib/jail1' and I changed my mind. 

I tried to delete the folder but it seems somehow some ACLs got between. I'm doing this make as root: 

[root_at_mrefns09 /var/lib]# setfacl -k jail1/bin/rcp 
setfacl: jail1/bin/rcp: acl_get_file() failed: Operation not supported 
[root_at_mrefns09 /var/lib]# getfacl jail1/bin/rcp 
# file: jail1/bin/rcp 
# owner: root 
# group: wheel 
user::r-x 
group::r-x 
other::r-x 
[root_at_mrefns09 /var/lib]# id 
uid=0(root) gid=0(wheel) groups=0(wheel),5(operator),5551(Domain Admins) 


I cannot change the ACL, nor delete the flag, even though I'm root. 

Any ideas?