[...]

builder: SMP make flags are set to -j2
Cloning into 'xorg-lib-libXrandr'...
From git://git.pld-linux.org/packages/xorg-lib-libXrandr
 * [new ref]         refs/notes/commits -> refs/notes/commits
2bf010736fc3b9d47d228a93288ccbdc40d2796f
Already on 'master'
Your branch is up to date with 'origin/master'.
Already up to date.
Available branches: master
Searching for tag auto/ti/xorg-lib-libXrandr-1.5.2-1...
Searching for tag auto/ti/xorg-lib-libXrandr-1_5_2-1...
--2019-06-01 23:10:15--  http://distfiles.pld-linux.org/by-md5/1/8/18f3b20d522f45e4dadd34afb5bea048/libXrandr-1.5.2.tar.bz2
Resolving distfiles.pld-linux.org (distfiles.pld-linux.org)... 193.239.45.41
Connecting to distfiles.pld-linux.org (distfiles.pld-linux.org)|193.239.45.41|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 330726 (323K) [application/x-bzip2]
Saving to: 'libXrandr-1.5.2.tar.bz2'
     0K .......... .......... .......... .......... .......... 15%  584K 0s
    50K .......... .......... .......... .......... .......... 30% 1.14M 0s
   100K .......... .......... .......... .......... .......... 46% 2.10M 0s
   150K .......... .......... .......... .......... .......... 61%  249M 0s
   200K .......... .......... .......... .......... .......... 77% 2.47M 0s
   250K .......... .......... .......... .......... .......... 92% 66.0M 0s
   300K .......... .......... ..                              100% 37.6M=0.2s
2019-06-01 23:10:15 (1.82 MB/s) - 'libXrandr-1.5.2.tar.bz2' saved [330726/330726]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/xorg-lib-libXrandr-1.5.2-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
Writing git revision for tag auto/ti/xorg-lib-libXrandr-1.5.2-1
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.23712
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf libXrandr-1.5.2
Begin-TLD-Builder-Info
Build-Time: user:0.75s sys:0.13s real:3.25s (faults io:0 non-io:93748)
Files queued for ftp:
    336072 xorg-lib-libXrandr-1.5.2-1.src.rpm
       196 xorg-lib-libXrandr-1.5.2-1.src.rpm.uploadinfo
End-TLD-Builder-Info