Build Failure on ports-10.13_x86_64

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.13_x86_64
Full logs:    https://build.macports.org/builders/ports-10.13_x86_64-watcher/builds/19551
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    py-zipp py-jsonschema py-kiwisolver py-cycler py-importlib-metadata py-cairo py-matplotlib
Subport list:
	- py38-cairo
	- py38-cycler
	- py38-kiwisolver
	- py38-matplotlib
Variants:     None
Revision:     299a854da282a9c708d341c433fe7e7d8bb8bb04
Build time:   1:36:56
Author:       Andrey Stromnov <stromnov at macports.org>

Log from failed builds:

Links to individual build jobs:
- ports-10.13_x86_64-builder #68921
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/68921
- ports-10.13_x86_64-builder #68922
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/68922
- ports-10.13_x86_64-builder #68923
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/68923
- ports-10.13_x86_64-builder #68924
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/68924

-- 
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MacPorts Buildbot
https://build.macports.org/