[...]

Wrote: /home/users/builder/rpm/SRPMS/xen-4.16.2-2.src.rpm
real 3.10
user 2.92
sys 0.13
exit status 0
Writing package revision
Already up to date.
warning: Macro expanded in comment on line 917: %{_datadir}/gocode/src/golang.xenproject.org/xenlight
No conditional flags passed
from available:
--with   :	 golang python2
--without:	 bluetooth brlapi efi hypervisor ocaml opengl pv_grub qemu_traditional sdl stubdom systemd xsm
Available branches: AC-branch XEN-4.3 XEN_3_0_2 XEN_3_0_4 XEN_3_4 dev-4.17 master xen-4.2 xen-4.5 xen-4.6 xen4.1
xen-4.16.2.tar.gz having proper md5sum already exists
lwip-1.3.0.tar.gz having proper md5sum already exists
newlib-1.16.0.tar.gz having proper md5sum already exists
zlib-1.2.3.tar.gz having proper md5sum already exists
pciutils-2.2.9.tar.bz2 having proper md5sum already exists
grub-0.97.tar.gz having proper md5sum already exists
ipxe-git-3c040ad387099483102708bb1839110bc788cefb.tar.gz having proper md5sum already exists
polarssl-1.1.4-gpl.tgz having proper md5sum already exists
tpm_emulator-0.7.4.tar.gz having proper md5sum already exists
gmp-4.3.2.tar.bz2 having proper md5sum already exists
./builder[2756]: ulimit: exceeds allowable limit
warning: Macro expanded in comment on line 923: %{_datadir}/gocode/src/golang.xenproject.org/xenlight
warning: %changelog not in descending chronological order
Building target platforms: i686-linux
Building for target i686-linux
Wrote: /home/users/builder/rpm/SRPMS/xen-4.16.2-2.src.rpm
real 3.36
user 2.92
sys 0.11
warning: Macro expanded in comment on line 923: %{_datadir}/gocode/src/golang.xenproject.org/xenlight
warning: %changelog not in descending chronological order
Writing git revision for tag tld/xen-4.16.2-2
error: Macro %_builddir has empty body
Begin-TLD-Builder-Info
Build-Time: user:9.50s sys:2.79s real:18.27s (faults io:94 non-io:869331)
Files queued for ftp:
  65540967 xen-4.16.2-2.src.rpm
       182 xen-4.16.2-2.src.rpm.uploadinfo
End-TLD-Builder-Info