jrans commented on issue #3585: [AIRFLOW-2731] Raise psutil restriction to <6.0.0 URL: https://github.com/apache/airflow/pull/3585#issuecomment-481659399 This PR has broken airflow for me, old limitation of <5 seems like it was for a reason.. I reckon its worth finding out why in [this commit](https://github.com/apache/airflow/commit/fdb7e949140b735b8554ae5b22ad752e86f6ebaf) the version was given an upper limit before making changes like this in future. Details: OS: osx 10.14.3 Python Version: 3.6.1 psutil 4.4.2 works, psutil 5.6.1 fails with this error: `ValueError: Cannot resolve 'airflow.utils.log.file_processor_handler.FileProcessorHandler': dlopen(/miniconda3/envs/mvp/lib/python3.6/site-packages/psutil/_psutil_osx.cpython-36m-darwin.so, 2): Symbol not found: _kIOMasterPortDefault` 
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