Build Failure on ports-10.6_i386_legacy

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.6_i386_legacy
Full logs:    https://build.macports.org/builders/ports-10.6_i386_legacy-watcher/builds/20904
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    py-gwpy
Subport list:
	- py27-gwpy
	- py36-gwpy
	- py37-gwpy
Variants:     None
Revision:     14594ca19592fd2e5850f1fbdd3ad99fad96c097
Build time:   0:39:39
Author:       Duncan Macleod <duncan.macleod at ligo.org>

Log from failed builds:

Links to individual build jobs:
- ports-10.6_i386_legacy-builder #57706
  https://build.macports.org/builders/ports-10.6_i386_legacy-builder/builds/57706
- ports-10.6_i386_legacy-builder #57707
  https://build.macports.org/builders/ports-10.6_i386_legacy-builder/builds/57707
- ports-10.6_i386_legacy-builder #57708
  https://build.macports.org/builders/ports-10.6_i386_legacy-builder/builds/57708

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