[MacPorts] #59921: Error: Failed to build shellinabox: command execution failed on High Sierra

[MacPorts]

#59921: Error: Failed to build shellinabox: command execution failed on High Sierra
--------------------------+-------------------------
  Reporter:  valorisa     |      Owner:  (none)
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.6.2
Resolution:               |   Keywords:  shellinabox
      Port:  shellinabox  |
--------------------------+-------------------------

Comment (by valorisa):

 sudo port -vvv selfupdate && sudo port -vvvv upgrade outdated

 gives same error

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Ticket URL: <https://trac.macports.org/ticket/59921#comment:4>
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