DistutilsNonPEP517Build: version 1.16.2: uses deprecated non-PEP517 build mode, please switch to DISTUTILS_USE_PEP517=...
  DistutilsNonPEP517Build: version 1.16.4: uses deprecated non-PEP517 build mode, please switch to DISTUTILS_USE_PEP517=...
  DistutilsNonPEP517Build: version 1.17.0: uses deprecated non-PEP517 build mode, please switch to DISTUTILS_USE_PEP517=...
  DistutilsNonPEP517Build: version 1.18.0: uses deprecated non-PEP517 build mode, please switch to DISTUTILS_USE_PEP517=...
  RedirectedUrl: version 1.18.0: metadata.xml: remote-id: permanently redirected: https://github.com/dugsong/libdnet -> https://github.com/ofalk/libdnet