Build Failure on ports-10.12_x86_64: ocaml-core, ocaml-core-kernel, ocaml-custom-printf

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.12_x86_64
Full logs:    https://build.macports.org/builders/ports-10.12_x86_64-watcher/builds/11352
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    ocaml-core
Subport list:
	- ocaml-core
Variants:     None
Revision:     d0e31acd30d75d07e52a4d30f8b430829d903821
Build time:   0:01:30
Author:       Ken <21211439+kencu at users.noreply.github.com>

Log from failed builds:
	Building 'ocaml-core' ... [ERROR] (failed to install dependency 'ocaml-core-kernel')
	> maintainers: .
	Building 'ocaml-core' ... [ERROR] (failed to install dependency 'ocaml-custom-printf')
	> maintainers: .

Broken ports:
	- ocaml-core
	- ocaml-core-kernel
	- ocaml-custom-printf

Links to individual build jobs:
- ports-10.12_x86_64-builder #52443
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/52443

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