[...]

building SRPM using: cd rpm/packages; nice -n 0 ./builder -nu -nm --nodeps --http -bs  -r HEAD  -Tp auto/ti/ -tt  alsa-plugins.spec 2>&1
builder: SMP make flags are set to -j2
Cloning into 'alsa-plugins'...
3f26d3c0a2a87a4152f7bb5c816b3218b75f38e5
Already on 'master'
Your branch is up-to-date with 'origin/master'.
Already up-to-date.
Available branches: master
Searching for tag auto/ti/alsa-plugins-1.0.29-3...
Searching for tag auto/ti/alsa-plugins-1_0_29-3...
--2015-04-08 09:37:03--  http://df.tld-linux.org/distfiles/by-md5/a/6/a66797b4471e3cbe96575207bfbe252c/alsa-plugins-1.0.29.tar.bz2
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: 366077 (357K) [application/x-bzip2]
Saving to: 'alsa-plugins-1.0.29.tar.bz2'
     0K .......... .......... .......... .......... .......... 13% 1.72M 0s
    50K .......... .......... .......... .......... .......... 27% 3.71M 0s
   100K .......... .......... .......... .......... .......... 41% 10.8M 0s
   150K .......... .......... .......... .......... .......... 55% 11.3M 0s
   200K .......... .......... .......... .......... .......... 69% 5.64M 0s
   250K .......... .......... .......... .......... .......... 83% 11.0M 0s
   300K .......... .......... .......... .......... .......... 97% 11.4M 0s
   350K .......                                               100% 14.7M=0.07s
2015-04-08 09:37:03 (5.11 MB/s) - 'alsa-plugins-1.0.29.tar.bz2' saved [366077/366077]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/alsa-plugins-1.0.29-3.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
Writing git revision for tag auto/ti/alsa-plugins-1.0.29-3
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.98408
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf alsa-plugins-1.0.29
Begin-PLD-Builder-Info
Build-Time: user:2.67s sys:1.21s real:4.27s (faults io:0 non-io:180629)
Files queued for ftp:
    372162 alsa-plugins-1.0.29-3.src.rpm
       191 alsa-plugins-1.0.29-3.src.rpm.uploadinfo
End-PLD-Builder-Info