Build Failure on ports-10.7_x86_64: py36-dns-lexicon, py37-dns-lexicon, py39-dns-lexicon

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.7_x86_64
Full logs:    https://build.macports.org/builders/ports-10.7_x86_64-watcher/builds/12581
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    py-dns-lexicon
Subport list:
	- py36-dns-lexicon
	- py37-dns-lexicon
	- py39-dns-lexicon
Variants:     None
Revision:     fad4bdfa7e6a76c0d181a10c3868039caf169864
Build time:   0:05:44
Author:       Marius Schamschula <mps at macports.org>

Log from failed builds:
	Building 'py36-dns-lexicon' ... [ERROR] (failed to calculate dependencies)
	> maintainers: mps at macports.org.
	Building 'py37-dns-lexicon' ... [ERROR] (failed to calculate dependencies)
	> maintainers: mps at macports.org.
	Building 'py39-dns-lexicon' ... [ERROR] (failed to calculate dependencies)
	> maintainers: mps at macports.org.

Broken ports:
	- py36-dns-lexicon
	- py37-dns-lexicon
	- py39-dns-lexicon

Responsible maintainers:
	- mps at macports.org

Links to individual build jobs:
- ports-10.7_x86_64-builder #36295
  https://build.macports.org/builders/ports-10.7_x86_64-builder/builds/36295
- ports-10.7_x86_64-builder #36296
  https://build.macports.org/builders/ports-10.7_x86_64-builder/builds/36296
- ports-10.7_x86_64-builder #36297
  https://build.macports.org/builders/ports-10.7_x86_64-builder/builds/36297

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