Build Failure on ports-10.12_x86_64: py35-graph-tool, py36-graph-tool, py37-graph-tool

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.12_x86_64
Full logs:    https://build.macports.org/builders/ports-10.12_x86_64-watcher/builds/19558
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    py-graph-tool
Subport list:
	- py35-graph-tool
	- py36-graph-tool
	- py37-graph-tool
Variants:     None
Revision:     3b313aa8727631273aa25dba0d359643b25ddfb0
Build time:   0:27:41
Author:       Mark Moll <mmoll at macports.org>

Log from failed builds:
	Building 'py35-graph-tool' ... [ERROR]
	> maintainers: tiago at skewed.de,mmoll at macports.org.
	Building 'py36-graph-tool' ... [ERROR]
	> maintainers: tiago at skewed.de,mmoll at macports.org.
	Building 'py37-graph-tool' ... [ERROR]
	> maintainers: tiago at skewed.de,mmoll at macports.org.

Broken ports:
	- py35-graph-tool
	- py36-graph-tool
	- py37-graph-tool

Responsible maintainers:
	- mmoll at macports.org
	- tiago at skewed.de

Links to individual build jobs:
- ports-10.12_x86_64-builder #79054
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/79054
- ports-10.12_x86_64-builder #79055
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/79055
- ports-10.12_x86_64-builder #79056
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/79056

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