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/25534
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:   0:40:50
Author:       Marius Schamschula <mps at macports.org>

Log from failed builds:

Links to individual build jobs:
- ports-10.12_x86_64-builder #96247
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/96247
- ports-10.12_x86_64-builder #96248
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/96248
- ports-10.12_x86_64-builder #96249
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/96249
- ports-10.12_x86_64-builder #96250
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/96250
- ports-10.12_x86_64-builder #96251
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/96251
- ports-10.12_x86_64-builder #96252
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/96252
- ports-10.12_x86_64-builder #96253
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/96253

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