The corresponding distrodata check is failing in several packages. The below code snippet contains the details. Log taken from [1]

[1] https://autobuilder.yocto.io/builders/nightly-oe-selftest/builds/433/steps/Running%20oe-selftest/logs/stdio

2017-08-08 00:23:59,473 - oe-selftest - INFO - ======================================================================
2017-08-08 00:23:59,474 - oe-selftest - INFO - FAIL [175.623s]: test_checkpkg (distrodata.Distrodata)
2017-08-08 00:23:59,474 - oe-selftest - INFO - ----------------------------------------------------------------------
2017-08-08 00:23:59,474 - oe-selftest - INFO - Traceback (most recent call last):
  File "/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-oe-selftest/build/meta/lib/oeqa/selftest/cases/distrodata.py", line 43, in test_checkpkg
    self.assertTrue(len(regressed_failures) == 0 and len(regressed_successes) == 0, msg)
AssertionError: False is not true : 
The following packages failed upstream version checks. Please fix them using UPSTREAM_CHECK_URI/UPSTREAM_CHECK_REGEX
(when using tarballs) or UPSTREAM_CHECK_GITTAGREGEX (when using git). If an upstream version check cannot be performed
(for example, if upstream does not use git tags), you can add the package to list of exceptions in
meta-selftest/files/distrodata/checkpkg_exceptions.
libtimedate-perl
libxml-sax-perl
llvm
libconvert-asn1-perl
diffstat
libxml-sax-base-perl
libxml-namespacesupport-perl