Build Failure on ports-10.6_x86_64_legacy

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.6_x86_64_legacy
Full logs:    https://build.macports.org/builders/ports-10.6_x86_64_legacy-watcher/builds/24464
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:     67d35ddfe3e9ffdb1e213567d836c69ee61c3e58
Build time:   0:53:16
Author:       Marius Schamschula <mps at macports.org>

Log from failed builds:

Links to individual build jobs:
- ports-10.6_x86_64_legacy-builder #102153
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/102153
- ports-10.6_x86_64_legacy-builder #102154
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/102154
- ports-10.6_x86_64_legacy-builder #102155
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/102155
- ports-10.6_x86_64_legacy-builder #102156
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/102156
- ports-10.6_x86_64_legacy-builder #102157
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/102157
- ports-10.6_x86_64_legacy-builder #102158
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/102158
- ports-10.6_x86_64_legacy-builder #102159
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/102159

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