[MacPorts] #52209: go @1.7 fails to build on macOS Sierra

[MacPorts]

#52209: go @1.7 fails to build on macOS Sierra
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  Reporter:  marcel@…  |      Owner:  macports-tickets@…
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.3.4
Resolution:            |   Keywords:
      Port:  go        |
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Comment (by larryv@…):

 This log is not from a clean build. Please run `sudo port clean go` and
 try again.

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Ticket URL: <https://trac.macports.org/ticket/52209#comment:1>
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