Build Failure on ports-10.9_x86_64

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.9_x86_64
Full logs:    https://build.macports.org/builders/ports-10.9_x86_64-watcher/builds/26539
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:   0:23:57
Author:       Marius Schamschula <mps at macports.org>

Log from failed builds:

Links to individual build jobs:
- ports-10.9_x86_64-builder #94109
  https://build.macports.org/builders/ports-10.9_x86_64-builder/builds/94109
- ports-10.9_x86_64-builder #94110
  https://build.macports.org/builders/ports-10.9_x86_64-builder/builds/94110
- ports-10.9_x86_64-builder #94111
  https://build.macports.org/builders/ports-10.9_x86_64-builder/builds/94111
- ports-10.9_x86_64-builder #94112
  https://build.macports.org/builders/ports-10.9_x86_64-builder/builds/94112
- ports-10.9_x86_64-builder #94113
  https://build.macports.org/builders/ports-10.9_x86_64-builder/builds/94113
- ports-10.9_x86_64-builder #94114
  https://build.macports.org/builders/ports-10.9_x86_64-builder/builds/94114
- ports-10.9_x86_64-builder #94115
  https://build.macports.org/builders/ports-10.9_x86_64-builder/builds/94115

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