[...]

prefix: auto/ti/
Already on 'master'
WARNING! Spec name (kernel-vanilla) does not agree with package name (kernel-4.4-vanilla)
No conditional flags passed
from available:
--with   :	 verbose
--without:	 doc source
Writing git revision for tag auto/ti/kernel-4.4-vanilla-4.4.0-1
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.21071
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf kernel-4.4-vanilla-4.4.0
Begin-PLD-Builder-Info
Build-Time: user:18.10s sys:6.31s real:39.16s (faults io:14 non-io:359956)
Files queued for ftp:
  87427782 kernel-4.4-vanilla-4.4.0-1.src.rpm
       196 kernel-4.4-vanilla-4.4.0-1.src.rpm.uploadinfo
End-PLD-Builder-Info