[...]

Length: 657424 (642K) [application/octet-stream]
Saving to: 'libpng-1.2.59.tar.xz'
     0K .......... .......... .......... .......... ..........  7% 1.21M 0s
    50K .......... .......... .......... .......... .......... 15% 2.39M 0s
   100K .......... .......... .......... .......... .......... 23% 38.0M 0s
   150K .......... .......... .......... .......... .......... 31% 84.6M 0s
   200K .......... .......... .......... .......... .......... 38% 2.64M 0s
   250K .......... .......... .......... .......... .......... 46% 42.2M 0s
   300K .......... .......... .......... .......... .......... 54% 44.7M 0s
   350K .......... .......... .......... .......... .......... 62% 2.76M 0s
   400K .......... .......... .......... .......... .......... 70% 37.0M 0s
   450K .......... .......... .......... .......... .......... 77% 45.1M 0s
   500K .......... .......... .......... .......... .......... 85% 95.0M 0s
   550K .......... .......... .......... .......... .......... 93% 2.78M 0s
   600K .......... .......... .......... .......... ..        100% 44.2M=0.1s
2018-03-12 15:14:08 (5.11 MB/s) - 'libpng-1.2.59.tar.xz' saved [657424/657424]
--2018-03-12 15:14:08--  http://distfiles.pld-linux.org/distfiles/by-md5/d/8/d8cea50b4e4b248391d26b14f3d5dfd2/libpng-1.2.59-apng.patch.gz
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: 10735 (10K) [application/x-gzip]
Saving to: 'libpng-1.2.59-apng.patch.gz'
     0K ..........                                            100%  228M=0s
2018-03-12 15:14:08 (228 MB/s) - 'libpng-1.2.59-apng.patch.gz' saved [10735/10735]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/libpng12-1.2.59-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
Writing git revision for tag auto/ti/libpng12-1.2.59-1
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.50944
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf libpng-1.2.59
Begin-TLD-Builder-Info
Build-Time: user:1.06s sys:0.42s real:3.26s (faults io:0 non-io:145079)
Files queued for ftp:
    678044 libpng12-1.2.59-1.src.rpm
       187 libpng12-1.2.59-1.src.rpm.uploadinfo
End-TLD-Builder-Info