Build Failure on ports-10.6_x86_64_legacy: ade, opencv4

[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/26597
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    gnutls opencv4
Subport list:
	- opencv4
Variants:     None
Revision:     6492e37827d70b3fd02e778cd1144c947e0153e0
Build time:   0:01:57
Author:       Chris Jones <jonesc at macports.org>

Log from failed builds:
	Building 'opencv4' ... [ERROR] (failed to install dependency 'ade')
	> maintainers: stromnov at macports.org,stromnov at macports.org.

Broken ports:
	- ade
	- opencv4

Responsible maintainers:
	- stromnov at macports.org

Links to individual build jobs:
- ports-10.6_x86_64_legacy-builder #108493
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/108493

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