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/26156
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:     d027531eb2354af268f9b6b4a2336d0c2af072a9
Build time:   0:37:45
Author:       Marius Schamschula <mps at macports.org>

Log from failed builds:

Links to individual build jobs:
- ports-10.6_x86_64_legacy-builder #107196
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/107196
- ports-10.6_x86_64_legacy-builder #107197
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/107197
- ports-10.6_x86_64_legacy-builder #107198
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/107198
- ports-10.6_x86_64_legacy-builder #107199
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/107199
- ports-10.6_x86_64_legacy-builder #107200
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/107200
- ports-10.6_x86_64_legacy-builder #107201
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/107201
- ports-10.6_x86_64_legacy-builder #107202
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/107202

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