Hi,

eclipse-4.12_1 fails to build in my poudriere on 12.1-RELEASE.

Here's excerpt from log:

```
/wrkdirs/usr/ports/java/eclipse/work/eclipse.platform.releng.aggregator-R4_12/eclipse.platform.ui/examples/org.eclipse.ui.examples.uriSchemeHandler/.polyglot.build.properties
[INFO] Computing target platform for MavenProject: org.eclipse.jdt:org.eclipse.jdt:3.18.0-SNAPSHOT @ /wrkdirs/usr/ports/java/eclipse/work/eclipse.platform.releng.aggregator-R4_12/eclipse.jdt/org.eclipse.jdt/pom.xml
[INFO] Adding repository https://download.eclipse.org/tools/orbit/downloads/drops/R20190602212107/repository
[INFO] Adding repository https://download.eclipse.org/modeling/emf/emf/builds/release/2.18
[INFO] Adding repository https://download.eclipse.org/jetty/updates/jetty-bundles-9.x/9.4.18.v20190429/
[INFO] Adding repository https://download.eclipse.org/rt/ecf/3.14.5/site.p2
[INFO] Adding repository https://download.eclipse.org/cbi/updates/license/2.0.1.v20180423-1114
[INFO] Adding repository https://download.eclipse.org/egit/updates-5.3
[INFO] Adding repository https://download.eclipse.org/reddeer/releases/2.5.0
[INFO] Adding repository https://download.eclipse.org/eclipse/updates/4.12-I-builds
[ERROR] Internal error: java.lang.RuntimeException: Failed to load p2 repository with ID 'eclipse' from location https://download.eclipse.org/eclipse/updates/4.12-I-builds: No repository found at https://download.eclipse.org/eclipse/updates/4.12-I-builds. -> [Help 1]
org.apache.maven.InternalErrorException: Internal error: java.lang.RuntimeException: Failed to load p2 repository with ID 'eclipse' from location https://download.eclipse.org/eclipse/updates/4.12-I-builds
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:120)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
    at org.codehaus.classworlds.Launcher.main (Launcher.java:47)
Caused by: java.lang.RuntimeException: Failed to load p2 repository with ID 'eclipse' from location https://download.eclipse.org/eclipse/updates/4.12-I-builds
    at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.loadMetadataRepository (TargetPlatformFactoryImpl.java:302)
    at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.gatherExternalInstallableUnits (TargetPlatformFactoryImpl.java:270)
    at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.createTargetPlatform (TargetPlatformFactoryImpl.java:176)
    at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.createTargetPlatform (TargetPlatformFactoryImpl.java:128)
    at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.createTargetPlatform (TargetPlatformFactoryImpl.java:1)
    at org.eclipse.tycho.p2.manager.ReactorRepositoryManagerImpl.computePreliminaryTargetPlatform (ReactorRepositoryManagerImpl.java:84)
    at org.eclipse.tycho.p2.resolver.P2DependencyResolver.computePreliminaryTargetPlatform (P2DependencyResolver.java:224)
    at org.eclipse.tycho.core.resolver.DefaultTychoResolver.resolveProject (DefaultTychoResolver.java:110)
    at org.eclipse.tycho.core.maven.TychoMavenLifecycleParticipant.afterProjectsRead (TychoMavenLifecycleParticipant.java:95)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:264)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
    at org.codehaus.classworlds.Launcher.main (Launcher.java:47)
Caused by: org.eclipse.equinox.p2.core.ProvisionException: No repository found at https://download.eclipse.org/eclipse/updates/4.12-I-builds.
    at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.fail (AbstractRepositoryManager.java:398)
    at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository (AbstractRepositoryManager.java:695)
    at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository (MetadataRepositoryManager.java:110)
    at org.eclipse.tycho.p2.remote.RemoteMetadataRepositoryManager.loadRepository (RemoteMetadataRepositoryManager.java:61)
    at org.eclipse.tycho.p2.remote.RemoteMetadataRepositoryManager.loadRepository (RemoteMetadataRepositoryManager.java:53)
    at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.loadMetadataRepository (TargetPlatformFactoryImpl.java:298)
    at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.gatherExternalInstallableUnits (TargetPlatformFactoryImpl.java:270)
    at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.createTargetPlatform (TargetPlatformFactoryImpl.java:176)
    at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.createTargetPlatform (TargetPlatformFactoryImpl.java:128)
    at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.createTargetPlatform (TargetPlatformFactoryImpl.java:1)
    at org.eclipse.tycho.p2.manager.ReactorRepositoryManagerImpl.computePreliminaryTargetPlatform (ReactorRepositoryManagerImpl.java:84)
    at org.eclipse.tycho.p2.resolver.P2DependencyResolver.computePreliminaryTargetPlatform (P2DependencyResolver.java:224)
    at org.eclipse.tycho.core.resolver.DefaultTychoResolver.resolveProject (DefaultTychoResolver.java:110)
    at org.eclipse.tycho.core.maven.TychoMavenLifecycleParticipant.afterProjectsRead (TychoMavenLifecycleParticipant.java:95)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:264)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
    at org.codehaus.classworlds.Launcher.main (Launcher.java:47)
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/InternalErrorException
*** Error code 1

Stop.
make: stopped in /usr/ports/java/eclipse
```