Build Failure on ports-10.7_x86_64: libass

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.7_x86_64
Full logs:    https://build.macports.org/builders/ports-10.7_x86_64-watcher/builds/11602
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    libass
Subport list:
	- libass
Variants:     None
Revision:     b24c68a571d347af23a48076c60e5e0de4656f6b
Build time:   0:03:09
Author:       Ken Cunningham <kencu at macports.org>

Log from failed builds:
	Building 'libass' ... [ERROR]
	> maintainers: .

Broken ports:
	- libass

Links to individual build jobs:
- ports-10.7_x86_64-builder #33933
  https://build.macports.org/builders/ports-10.7_x86_64-builder/builds/33933

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