[...]

warning: line 387: It's not recommended to have unversioned Obsoletes: Obsoletes:	ruby-json-rubyforge
Building target platforms: i686-linux
Building for target i686-linux
Wrote: /home/users/builder/rpm/SRPMS/ruby-2.4.6-1.src.rpm
real 3.82
user 3.68
sys 0.13
exit status 0
Writing package revision
builder: SMP make flags are set to -j2
Already up to date.
warning: Macro expanded in comment on line 257: %{version},%{release} macros may not be used directly as they take last
warning: line 387: It's not recommended to have unversioned Obsoletes: Obsoletes:	ruby-json-rubyforge
No conditional flags passed
from available:
--with   :	 bootstrap tests
--without:	 batteries default_ruby doc
Available branches: master
ruby-2.4.6.tar.xz having proper md5sum already exists
ruby_2_4_6_stdlib_rdocs.tgz having proper md5sum already exists
ruby_2_4_6_core_rdocs.tgz having proper md5sum already exists
CaseFolding.txt having proper md5sum already exists
CompositionExclusions.txt having proper md5sum already exists
NormalizationTest.txt having proper md5sum already exists
SpecialCasing.txt having proper md5sum already exists
UnicodeData.txt having proper md5sum already exists
./builder[2756]: ulimit: exceeds allowable limit
warning: Macro expanded in comment on line 257: %{version},%{release} macros may not be used directly as they take last
warning: line 387: It's not recommended to have unversioned Obsoletes: Obsoletes:	ruby-json-rubyforge
Building target platforms: i686-linux
Building for target i686-linux
Wrote: /home/users/builder/rpm/SRPMS/ruby-2.4.6-1.src.rpm
real 4.16
user 3.69
sys 0.16
warning: Macro expanded in comment on line 257: %{version},%{release} macros may not be used directly as they take last
warning: line 387: It's not recommended to have unversioned Obsoletes: Obsoletes:	ruby-json-rubyforge
Writing git revision for tag tld/ruby-2.4.6-1
Error: package revision tld/ruby-2.4.6-1 already exists
error: Macro %_builddir has empty body
Begin-TLD-Builder-Info
Build-Time: user:9.88s sys:2.55s real:12.19s (faults io:0 non-io:433209)
End-TLD-Builder-Info