Build Failure on ports-10.12_x86_64

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.12_x86_64
Full logs:    https://build.macports.org/builders/ports-10.12_x86_64-watcher/builds/23844
Build reason: The web-page 'rebuild' button was pressed by 'jmr <jmr at localhost>': 
Port list:    packer
Subport list:
	- packer
Variants:     None
Revision:     2b2ddb49947b10cf9b88d32f3ee62f77229fa13f
Build time:   0:09:12
Author:       newtonne <14221622+newtonne at users.noreply.github.com>

Log from failed builds:

Links to individual build jobs:
- ports-10.12_x86_64-builder #92344
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/92344

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MacPorts Buildbot
https://build.macports.org/