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/17477
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:     397d12dcd528be8d8bc13af3109e990b36c91f15
Build time:   0:29:00
Author:       Marius Schamschula <mps at macports.org>

Log from failed builds:

Links to individual build jobs:
- ports-10.13_x86_64-builder #61550
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/61550
- ports-10.13_x86_64-builder #61551
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/61551
- ports-10.13_x86_64-builder #61552
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/61552
- ports-10.13_x86_64-builder #61553
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/61553
- ports-10.13_x86_64-builder #61554
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/61554
- ports-10.13_x86_64-builder #61555
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/61555
- ports-10.13_x86_64-builder #61556
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/61556

-- 
Best regards,
MacPorts Buildbot
https://build.macports.org/