Build Failure on ports-10.6_x86_64_legacy

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.6_x86_64_legacy
Full logs:    https://build.macports.org/builders/ports-10.6_x86_64_legacy-watcher/builds/16574
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    py-graveyard py-virtualenv
Subport list:
	- py27-virtualenv
	- py-virtualenv
	- py34-virtualenv
	- py35-virtualenv
	- py36-virtualenv
	- py37-virtualenv
Variants:     None
Revision:     be83b67a0fa270989f2ac4d862aefa3d6f411c89
Build time:   0:15:39
Author:       reneeotten <reneeotten at users.noreply.github.com>

Log from failed builds:

Links to individual build jobs:
- ports-10.6_x86_64_legacy-builder #70524
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/70524
- ports-10.6_x86_64_legacy-builder #70525
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/70525
- ports-10.6_x86_64_legacy-builder #70526
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/70526
- ports-10.6_x86_64_legacy-builder #70527
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/70527
- ports-10.6_x86_64_legacy-builder #70528
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/70528
- ports-10.6_x86_64_legacy-builder #70529
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/70529

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