Given following log snippets, their explanation, and nothing else, explain what failure, if any, occurred during build of this package.

  Snippets are in a format of [X] : [Y], where [X] is a log snippet, and [Y] is the explanation.

  Snippets are delimited with '================'.

  Drawing on information from all snippets, provide a concise explanation of the issue and recommend a solution.

  Explanation of the issue, and recommended solution, should take a handful of sentences.

  Snippets:

  [    Bad exit status from /var/tmp/rpm-tmp.w9mUKO (%build)]: [fail in build section]
=============
[signals.c:329:17: error: ‘return’ with no value, in function returning non-void [-Wreturn-mismatch]
  329 |                 return;
      |                 ^~~~~~]: [detailed description of issue]

Issue: ‘return’ with no value, in function returning non-void
Resolution: return the value from the function or change the definition of the function core_handler, or contact the upstream 