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/23345
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:     17900bbdd2970f5dc26b831e2f3b28beb53bd578
Build time:   0:43:19
Author:       Marius Schamschula <mps at macports.org>

Log from failed builds:

Links to individual build jobs:
- ports-10.12_x86_64-builder #91156
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/91156
- ports-10.12_x86_64-builder #91157
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/91157
- ports-10.12_x86_64-builder #91158
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/91158
- ports-10.12_x86_64-builder #91159
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/91159
- ports-10.12_x86_64-builder #91160
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/91160
- ports-10.12_x86_64-builder #91161
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/91161
- ports-10.12_x86_64-builder #91162
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/91162

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