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/25251
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:     beb8f4857561816d017325ff31b8ed4b4c2c8591
Build time:   0:38:13
Author:       Marius Schamschula <mps at macports.org>

Log from failed builds:

Links to individual build jobs:
- ports-10.6_x86_64_legacy-builder #104594
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/104594
- ports-10.6_x86_64_legacy-builder #104595
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/104595
- ports-10.6_x86_64_legacy-builder #104596
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/104596
- ports-10.6_x86_64_legacy-builder #104597
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/104597
- ports-10.6_x86_64_legacy-builder #104598
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/104598
- ports-10.6_x86_64_legacy-builder #104599
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/104599
- ports-10.6_x86_64_legacy-builder #104600
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/104600

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