[...]

Resolving df.tld-linux.org (df.tld-linux.org)... 46.4.78.55
Connecting to df.tld-linux.org (df.tld-linux.org)|46.4.78.55|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 692868 (677K) [application/x-xz]
Saving to: 'iproute2-4.18.0.tar.xz'
     0K .......... .......... .......... .......... ..........  7% 28.5M 0s
    50K .......... .......... .......... .......... .......... 14% 49.2M 0s
   100K .......... .......... .......... .......... .......... 22%  404M 0s
   150K .......... .......... .......... .......... .......... 29% 90.8M 0s
   200K .......... .......... .......... .......... .......... 36% 72.0M 0s
   250K .......... .......... .......... .......... .......... 44% 85.9M 0s
   300K .......... .......... .......... .......... .......... 51%  398M 0s
   350K .......... .......... .......... .......... .......... 59% 73.7M 0s
   400K .......... .......... .......... .......... .......... 66% 78.6M 0s
   450K .......... .......... .......... .......... .......... 73% 76.1M 0s
   500K .......... .......... .......... .......... .......... 81%  323M 0s
   550K .......... .......... .......... .......... .......... 88% 88.4M 0s
   600K .......... .......... .......... .......... .......... 96% 92.2M 0s
   650K .......... .......... ......                          100%  346M=0.008s
2018-08-31 21:04:07 (82.9 MB/s) - 'iproute2-4.18.0.tar.xz' saved [692868/692868]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/iproute2-4.18.0-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	 iface_descr uClibc
--without:	 atm tc
Writing git revision for tag auto/ti/iproute2-4.18.0-1
error: Macro %_builddir has empty body
error: Macro %_builddir has empty body
Executing(--clean): env -i TMP=/home/users/builder/tmp HOME=/home/users/builder PATH=/bin:/usr/bin:/usr/sbin:/sbin:/usr/X11R6/bin TMPDIR=/home/users/builder/tmp  /bin/sh -e /home/users/builder/tmp/rpm-tmp.57334
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf iproute2-4.18.0
Begin-TLD-Builder-Info
Build-Time: user:0.56s sys:0.07s real:1.37s (faults io:0 non-io:169025)
Files queued for ftp:
    713002 iproute2-4.18.0-1.src.rpm
       187 iproute2-4.18.0-1.src.rpm.uploadinfo
End-TLD-Builder-Info