freebsd stable - Aug 2015 - todays 10.2-stable does not seem to compile for me

===> procfs (cleandir)
rm -f export_syms procfs.ko procfs.kld procfs_ctl.o procfs_dbregs.o
procfs_fpregs.o procfs_ioctl.o procfs_map.o procfs_mem.o procfs_note.o
procfs_osrel.o procfs_regs.o procfs_rlimit.o procfs_status.o
procfs_type.o procfs.o procfs.ko.debug procfs.ko.symbols opt_compat.h
vnode_if.h vnode_if_newproto.h vnode_if_typedef.h
rm -f @ machine x86
rm: machine: is a directory
rm: x86: is a directory
*** Error code 1

Did rebuild world first, but rm is right:
[/usr/srcs/work10/src/sys/modules/procfs] root at zfs.digiware.nl# ls
Makefile        machine/        x86/

Same in sys/modules/vmm ...

I have no idea why they are actual directories on this system.
Perhaps because I executed make in the local directory to make the
module, certainly for vmm. But then still it would be nice that cleaning
would do its work?
And delete with rm -rf?

--WjW