``` Creating setup.py project f...
# announce
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Creating setup.py project for PythonLibrary(BuildFileAddress(contrib/python/src/python/pants/contrib/python/checks/checker/BUILD, checker))
15:31:43 00:03       [find-namespace-packages]
                   Running bdist_wheel --universal against /travis/workdir/dist/pantsbuild.pants.contrib.python.checks.checker-1.23.0dev0+gitd21e376c
               Waiting for background workers to finish.
15:31:44 00:04   [complete]
               SUCCESS
cp: cannot stat `': No such file or directory
Failed to find package pantsbuild.pants-1.23.0dev0+gitd21e376c!
Dry run release failed.
The command "docker run