INDEX build failed for 8.x

[Ports Index build]

INDEX build failed with errors:
Generating INDEX-8 - please wait..clang: not found
 Done.
Warning: Duplicate INDEX entry: rubygem-bunny-0.6.0

Committers on the hook:
 culot delphij girgen jgh jkim sbz swills 

Most recent SVN update was:
Updating '.':
U    databases/pgbadger/Makefile
U    databases/pgbadger/distinfo
U    security/vuxml/vuln.xml
U    devel/p5-Config-INI/Makefile
U    devel/p5-Config-INI/distinfo
U    devel/p5-Config-INI/pkg-descr
UU   devel/py-ptrace/pkg-plist
UU   devel/py-ptrace/Makefile
UU   devel/py-ptrace/distinfo
A    devel/libvirt-glib
A    devel/libvirt-glib/pkg-plist
A    devel/libvirt-glib/Makefile
A    devel/libvirt-glib/distinfo
A    devel/libvirt-glib/pkg-descr
U    devel/Makefile
U    ftp/curl/Makefile
A    ftp/curl/files/patch-CVE-2013-2174
Updated to revision 322161.