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/19894
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:     3b313aa8727631273aa25dba0d359643b25ddfb0
Build time:   0:27:57
Author:       Mark Moll <mmoll at macports.org>

Log from failed builds:
	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 'py36-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 #87144
  https://build.macports.org/builders/ports-10.5_ppc_legacy-builder/builds/87144
- ports-10.5_ppc_legacy-builder #87145
  https://build.macports.org/builders/ports-10.5_ppc_legacy-builder/builds/87145
- ports-10.5_ppc_legacy-builder #87146
  https://build.macports.org/builders/ports-10.5_ppc_legacy-builder/builds/87146
- ports-10.5_ppc_legacy-builder #87147
  https://build.macports.org/builders/ports-10.5_ppc_legacy-builder/builds/87147
- ports-10.5_ppc_legacy-builder #87148
  https://build.macports.org/builders/ports-10.5_ppc_legacy-builder/builds/87148

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