Build Failure on ports-10.15_x86_64

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.15_x86_64
Full logs:    https://build.macports.org/builders/ports-10.15_x86_64-watcher/builds/10624
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    opencv
Subport list:
	- opencv
Variants:     None
Revision:     4093fb8bb6de81c602d9ac37a0d37078bdecae16
Build time:   0:51:11
Author:       Marius Schamschula <mps at macports.org>

Log from failed builds:

Links to individual build jobs:
- ports-10.15_x86_64-builder #41999
  https://build.macports.org/builders/ports-10.15_x86_64-builder/builds/41999

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