[...]

Saving to: 'libmtp-1.1.17.tar.gz'
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   800K ..........                                            100%  160M=0.1s
2020-04-05 17:13:21 (6.93 MB/s) - 'libmtp-1.1.17.tar.gz' saved [829529/829529]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/libmtp-1.1.17-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	
--without:	 apidocs
Writing git revision for tag auto/ti/libmtp-1.1.17-1
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.26877
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf libmtp-1.1.17
Begin-TLD-Builder-Info
Build-Time: user:1.08s sys:0.50s real:2.57s (faults io:0 non-io:86745)
Files queued for ftp:
    834310 libmtp-1.1.17-1.src.rpm
       185 libmtp-1.1.17-1.src.rpm.uploadinfo
End-TLD-Builder-Info