Build Failure on ports-10.13_x86_64

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.13_x86_64
Full logs:    https://build.macports.org/builders/ports-10.13_x86_64-watcher/builds/17514
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    py-acme certbot certbot-apache certbot-nginx
Subport list:
	- py27-acme
	- certbot
	- certbot-apache
	- certbot-nginx
	- py-acme
	- py36-acme
	- py37-acme
Variants:     None
Revision:     3a3a79719f687963626e35e7c2a7fa4810ba84b4
Build time:   0:35:00
Author:       Marius Schamschula <mps at macports.org>

Log from failed builds:

Links to individual build jobs:
- ports-10.13_x86_64-builder #61596
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/61596
- ports-10.13_x86_64-builder #61597
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/61597
- ports-10.13_x86_64-builder #61598
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/61598
- ports-10.13_x86_64-builder #61599
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/61599
- ports-10.13_x86_64-builder #61600
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/61600
- ports-10.13_x86_64-builder #61601
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/61601
- ports-10.13_x86_64-builder #61602
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/61602

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