[...]

 80750K .......... .......... .......... .......... .......... 99% 10.3M 0s
 80800K .......... .......... .......... .......... .......... 99% 6.35M 0s
 80850K .......... .......... .......... .......... .......... 99% 10.4M 0s
 80900K .......... .......... .......... .......... .......... 99% 10.9M 0s
 80950K .......... .......... .......... .......... .......... 99% 7.22M 0s
 81000K .......... .......... .......... .......... .......... 99% 8.26M 0s
 81050K .......... .......... ..                              100% 12.3M=12s
2015-07-24 16:03:00 (6.42 MB/s) - 'linux-4.1.tar.xz' saved [83017828/83017828]
--2015-07-24 16:03:01--  http://df.tld-linux.org/distfiles/by-md5/6/a/6a388f552b05243ae4165735da839e24/patch-4.1.3.xz
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: 55160 (54K) [application/x-xz]
Saving to: 'patch-4.1.3.xz'
     0K .......... .......... .......... .......... .......... 92% 1.39M 0s
    50K ...                                                   100% 13.6M=0.04s
2015-07-24 16:03:01 (1.49 MB/s) - 'patch-4.1.3.xz' saved [55160/55160]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/linux-libc-headers-4.1.3-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	
--without:	 tests
Writing git revision for tag auto/ti/linux-libc-headers-4.1.3-1
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.91554
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf linux-libc-headers-4.1.3
Begin-PLD-Builder-Info
Build-Time: user:17.24s sys:7.25s real:39.23s (faults io:119 non-io:368278)
Files queued for ftp:
  83119351 linux-libc-headers-4.1.3-1.src.rpm
       196 linux-libc-headers-4.1.3-1.src.rpm.uploadinfo
End-PLD-Builder-Info