[MacPorts] #56596: rev-upgrade failed three times

[MacPorts]

#56596: rev-upgrade failed three times
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  Reporter:  clemson472  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:  gcc5, gcc7, mpicc-openmpi-gcc5
      Port:              |
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Changes (by clemson472):

 * Attachment "mpi-upgrade" added.

 output of rev-grade

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Ticket URL: <https://trac.macports.org/ticket/56596>
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