Build Failure on ports-10.11_x86_64: stack

[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/33894
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    stack
Subport list:
	- stack
Variants:     None
Revision:     927ff0dca579eb105d66f235d9b7ee4f7581e616
Build time:   0:43:26
Author:       Steven Thomas Smith <s.t.smith at ieee.org>

Log from failed builds:
	Building 'stack' ... [ERROR]
	> maintainers: s.t.smith at ieee.org.

Broken ports:
	- stack

Responsible maintainers:
	- s.t.smith at ieee.org

Links to individual build jobs:
- ports-10.11_x86_64-builder #113511
  https://build.macports.org/builders/ports-10.11_x86_64-builder/builds/113511

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