Build Failure on ports-10.11_x86_64: py35-graph-tool, py36-graph-tool, py37-graph-tool

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.11_x86_64
Full logs:    https://build.macports.org/builders/ports-10.11_x86_64-watcher/builds/17020
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    py-graph-tool py-graveyard
Subport list:
	- py35-graph-tool
	- py36-graph-tool
	- py37-graph-tool
Variants:     None
Revision:     18df0cd130878a0df461a759229a8a791ad7ca1a
Build time:   0:33:51
Author:       David B. Evans <devans 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-10.11_x86_64-builder #61058
  https://build.macports.org/builders/ports-10.11_x86_64-builder/builds/61058
- ports-10.11_x86_64-builder #61059
  https://build.macports.org/builders/ports-10.11_x86_64-builder/builds/61059
- ports-10.11_x86_64-builder #61060
  https://build.macports.org/builders/ports-10.11_x86_64-builder/builds/61060

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