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/24500
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:   0:43:35
Author:       Marius Schamschula <mps at macports.org>

Log from failed builds:

Links to individual build jobs:
- ports-10.6_x86_64_legacy-builder #102246
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/102246
- ports-10.6_x86_64_legacy-builder #102247
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/102247
- ports-10.6_x86_64_legacy-builder #102248
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/102248
- ports-10.6_x86_64_legacy-builder #102249
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/102249
- ports-10.6_x86_64_legacy-builder #102250
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/102250
- ports-10.6_x86_64_legacy-builder #102251
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/102251
- ports-10.6_x86_64_legacy-builder #102252
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/102252

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