Build Failure on ports-10.5_ppc_legacy: libgcc7, py-graph-tool, py27-graph-tool, py35-graph-tool, py36-graph-tool, py37-graph-tool

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.5_ppc_legacy
Full logs:    https://build.macports.org/builders/ports-10.5_ppc_legacy-watcher/builds/19873
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    py-graph-tool
Subport list:
	- py27-graph-tool
	- py-graph-tool
	- py35-graph-tool
	- py36-graph-tool
	- py37-graph-tool
Variants:     None
Revision:     c75b9052a5a037daf3b6db060becd5649d77962d
Build time:   0:26:07
Author:       Mark Moll <mmoll at macports.org>

Log from failed builds:
	Building 'py36-graph-tool' ... [ERROR] (failed to install dependency 'libgcc7')
	> maintainers: tiago at skewed.de,mmoll at macports.org.
	Building 'py27-graph-tool' ... [ERROR] (failed to install dependency 'libgcc7')
	> maintainers: tiago at skewed.de,mmoll at macports.org.
	Building 'py-graph-tool' ... [ERROR] (failed to install dependency 'libgcc7')
	> maintainers: tiago at skewed.de,mmoll at macports.org.
	Building 'py35-graph-tool' ... [ERROR] (failed to install dependency 'libgcc7')
	> maintainers: tiago at skewed.de,mmoll at macports.org.
	Building 'py37-graph-tool' ... [ERROR] (failed to install dependency 'libgcc7')
	> maintainers: tiago at skewed.de,mmoll at macports.org.

Broken ports:
	- libgcc7
	- py-graph-tool
	- py27-graph-tool
	- 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-10.5_ppc_legacy-builder #87086
  https://build.macports.org/builders/ports-10.5_ppc_legacy-builder/builds/87086
- ports-10.5_ppc_legacy-builder #87087
  https://build.macports.org/builders/ports-10.5_ppc_legacy-builder/builds/87087
- ports-10.5_ppc_legacy-builder #87088
  https://build.macports.org/builders/ports-10.5_ppc_legacy-builder/builds/87088
- ports-10.5_ppc_legacy-builder #87089
  https://build.macports.org/builders/ports-10.5_ppc_legacy-builder/builds/87089
- ports-10.5_ppc_legacy-builder #87090
  https://build.macports.org/builders/ports-10.5_ppc_legacy-builder/builds/87090

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