See <https://builds.apache.org/job/maven-enforcer/104/>

------------------------------------------
[...truncated 546 lines...]
[INFO] Installing 
<https://builds.apache.org/job/maven-enforcer/ws/maven-enforcer-plugin/target/maven-enforcer-plugin-2.0-SNAPSHOT.jar>
 to 
<https://builds.apache.org/job/maven-enforcer/ws/maven-enforcer-plugin/target/local-repo/org/apache/maven/plugins/maven-enforcer-plugin/2.0-SNAPSHOT/maven-enforcer-plugin-2.0-SNAPSHOT.jar>
[INFO] 
[INFO] --- mrm-maven-plugin:1.0-beta-1:start (default) @ maven-enforcer-plugin 
---
[INFO] Configuring Mock Repository Manager...
[INFO]   Mock content (source: 
<https://builds.apache.org/job/maven-enforcer/ws/maven-enforcer-plugin/src/it/mrm/repository)>
[INFO]   Proxy (source: this Maven session)
[INFO] Starting Mock Repository Manager
[INFO] Logging to org.slf4j.impl.JDK14LoggerAdapter(org.mortbay.log) via 
org.mortbay.log.Slf4jLog
[INFO] jetty-6.1.5
[INFO] Started SocketConnector@0.0.0.0:51430
[INFO] Mock Repository Manager http://localhost:51430 is started.
[INFO] Setting property 'repository.proxy.url' to 'http://localhost:51430'.
[INFO] 
[INFO] --- maven-invoker-plugin:1.8:run (integration-test) @ 
maven-enforcer-plugin ---
[INFO] Building: require-plugin-versions/pom.xml
[INFO] snapshot org.apache.maven.plugins:maven-enforcer-plugin:2.0-SNAPSHOT: 
checking for updates from Nexus
[WARNING] repository metadata for: 'snapshot 
org.apache.maven.plugins:maven-enforcer-plugin:2.0-SNAPSHOT' could not be 
retrieved from repository: Nexus due to an error: Failed to transfer file: 
http://repository.apache.org/snapshots/org/apache/maven/plugins/maven-enforcer-plugin/2.0-SNAPSHOT/maven-metadata.xml.
 Return code is: 503 , ReasonPhrase:Service Temporarily Unavailable.
[INFO] artifact org.apache.maven.plugins.maven-enforcer-plugin:2.0-SNAPSHOT: 
checking for updates from central
[INFO] artifact org.apache.maven.enforcer.enforcer:2.0-SNAPSHOT: checking for 
updates from central
[INFO] artifact org.apache.maven.enforcer.enforcer-api:2.0-SNAPSHOT: checking 
for updates from central
[INFO] artifact org.apache.maven.enforcer.enforcer-rules:2.0-SNAPSHOT: checking 
for updates from central
[INFO] ..SUCCESS (8.6 s)
[INFO] Building: require-plugin-versions-expressions/pom.xml
[INFO] ..SUCCESS (2.8 s)
[INFO] Building: require-release-version/pom.xml
[INFO] ..SUCCESS (2.7 s)
[INFO] Building: require-no-repositories/pom.xml
[INFO] ..SUCCESS (2.8 s)
[INFO] Building: require-active-profile-from-settings/pom.xml
[INFO] ..SUCCESS (2.7 s)
[INFO] Building: require-plugin-versions-plugin-with-extensions/pom.xml
[INFO] artifact org.apache.maven.plugins:maven-install-plugin: checking for 
updates from central
[INFO] artifact org.apache.maven.plugins:maven-deploy-plugin: checking for 
updates from central
[INFO] ..SUCCESS (4.6 s)
[INFO] Building: require-no-repositories_failure/pom.xml
[INFO] run script verify.groovy
[INFO] ..SUCCESS (4.0 s)
[INFO] Building: require-active-profile/pom.xml
[INFO] ..SUCCESS (2.7 s)
[INFO] Building: require-release-dependencies-excludes/pom.xml
[INFO] snapshot 
org.apache.maven.plugins.enforcer.its:menforcer85_api:1.0-SNAPSHOT: checking 
for updates from Nexus
[WARNING] repository metadata for: 'snapshot 
org.apache.maven.plugins.enforcer.its:menforcer85_api:1.0-SNAPSHOT' could not 
be retrieved from repository: Nexus due to an error: Failed to transfer file: 
http://repository.apache.org/snapshots/org/apache/maven/plugins/enforcer/its/menforcer85_api/1.0-SNAPSHOT/maven-metadata.xml.
 Return code is: 503 , ReasonPhrase:Service Temporarily Unavailable.
[INFO] artifact 
org.apache.maven.plugins.enforcer.its.menforcer85_api:1.0-SNAPSHOT: checking 
for updates from central
[INFO] ..SUCCESS (2.8 s)
[INFO] Building: dependencies_not_converging_test_scope/pom.xml
[INFO] ..SUCCESS (2.8 s)
[INFO] Building: banned-dependencies-wildcards/pom.xml
[INFO] ..SUCCESS (2.7 s)
[INFO] Building: require-upper-bound-dependencies-managed_failure/pom.xml
[INFO] run script verify.groovy
[INFO] ..SUCCESS (2.8 s)
[INFO] Building: require-upper-bound-dependencies-managed_success/pom.xml
[INFO] ..SUCCESS (3.6 s)
[INFO] Building: require-active-profile-all/pom.xml
[INFO] ..SUCCESS (2.7 s)
[INFO] Building: require-release-dependencies-excludes_failure/pom.xml
[INFO] ..SUCCESS (2.7 s)
[INFO] Building: require-plugin-versions-custom-packaging/pom.xml
[INFO] artifact org.apache.maven.plugins:maven-resources-plugin: checking for 
updates from central
[INFO] artifact org.apache.maven.plugins:maven-surefire-plugin: checking for 
updates from central
[INFO] artifact org.apache.maven.plugins:maven-compiler-plugin: checking for 
updates from central
[INFO] ..SUCCESS (4.0 s)
[INFO] Building: require-upper-bound-deps_failure/pom.xml
[INFO] run script verify.groovy
[INFO] ..SUCCESS (2.8 s)
[INFO] Building: always-fail/pom.xml
[INFO] ..SUCCESS (2.8 s)
[INFO] Building: ban-transitive-dependencies-fail/pom.xml
[INFO] run script verify.groovy
[INFO] ..SUCCESS (2.7 s)
[INFO] Building: always-fail-warn/pom.xml
[INFO] run script verify.groovy
[INFO] ..SUCCESS (2.8 s)
[INFO] Building: require-plugin-versions-projectGAVexpressions/pom.xml
[INFO] ..SUCCESS (2.4 s)
[INFO] Building: multimodule/pom.xml
[INFO] ..SUCCESS (2.8 s)
[INFO] Building: require-same-versions_failure/pom.xml
[INFO] ..SUCCESS (2.7 s)
[INFO] Building: dependencies_converge/pom.xml
[INFO] ..SUCCESS (2.7 s)
[INFO] Building: dependencies_not_converging/pom.xml
[INFO] ..SUCCESS (2.9 s)
[INFO] Building: require-upper-bound-dependencies-unique_failure/pom.xml
[INFO] snapshot 
org.apache.maven.plugins.enforcer.its:menforcer134_project:1.0-SNAPSHOT: 
checking for updates from Nexus
[WARNING] repository metadata for: 'snapshot 
org.apache.maven.plugins.enforcer.its:menforcer134_project:1.0-SNAPSHOT' could 
not be retrieved from repository: Nexus due to an error: Failed to transfer 
file: 
http://repository.apache.org/snapshots/org/apache/maven/plugins/enforcer/its/menforcer134_project/1.0-SNAPSHOT/maven-metadata.xml.
 Return code is: 503 , ReasonPhrase:Service Temporarily Unavailable.
[INFO] artifact 
org.apache.maven.plugins.enforcer.its.menforcer134_project:1.0-SNAPSHOT: 
checking for updates from central
[INFO] snapshot 
org.apache.maven.plugins.enforcer.its:menforcer134_modelbuilder:1.0-SNAPSHOT: 
checking for updates from Nexus
[WARNING] repository metadata for: 'snapshot 
org.apache.maven.plugins.enforcer.its:menforcer134_modelbuilder:1.0-SNAPSHOT' 
could not be retrieved from repository: Nexus due to an error: Failed to 
transfer file: 
http://repository.apache.org/snapshots/org/apache/maven/plugins/enforcer/its/menforcer134_modelbuilder/1.0-SNAPSHOT/maven-metadata.xml.
 Return code is: 503 , ReasonPhrase:Service Temporarily Unavailable.
[INFO] artifact 
org.apache.maven.plugins.enforcer.its.menforcer134_modelbuilder:1.0-SNAPSHOT: 
checking for updates from central
Downloading: 
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/enforcer/its/menforcer134_model/1.0-20130423.044324-5,638/menforcer134_model-1.0-20130423.044324-5,638.pom
Downloading: 
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/enforcer/its/menforcer134_model/1.0-20130423.044324-5,638/menforcer134_model-1.0-20130423.044324-5,638.pom
[INFO] snapshot 
org.apache.maven.plugins.enforcer.its:menforcer134_model:1.0-SNAPSHOT: checking 
for updates from Nexus
[WARNING] repository metadata for: 'snapshot 
org.apache.maven.plugins.enforcer.its:menforcer134_model:1.0-SNAPSHOT' could 
not be retrieved from repository: Nexus due to an error: Failed to transfer 
file: 
http://repository.apache.org/snapshots/org/apache/maven/plugins/enforcer/its/menforcer134_model/1.0-SNAPSHOT/maven-metadata.xml.
 Return code is: 503 , ReasonPhrase:Service Temporarily Unavailable.
[INFO] artifact 
org.apache.maven.plugins.enforcer.its.menforcer134_model:1.0-SNAPSHOT: checking 
for updates from central
Downloading: 
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/enforcer/its/menforcer134_model/1.0-20130423.042904-7,222/menforcer134_model-1.0-20130423.042904-7,222.pom
Downloading: 
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/enforcer/its/menforcer134_model/1.0-20130423.042904-7,222/menforcer134_model-1.0-20130423.042904-7,222.pom
[INFO] run script verify.groovy
[INFO] ..SUCCESS (2.9 s)
[INFO] Building: require-files-size/pom.xml
[INFO] ..SUCCESS (2.8 s)
[INFO] Building: require-upper-bound-deps_success/pom.xml
[INFO] ..SUCCESS (2.8 s)
[INFO] Building: require-files-exist/pom.xml
[INFO] ..SUCCESS (2.7 s)
[INFO] Building: require-java-version/pom.xml
[INFO] ..SUCCESS (2.7 s)
[INFO] Building: banned-dependencies/pom.xml
[INFO] ..SUCCESS (2.8 s)
[INFO] Building: require-upper-bound-dependencies-unique_success/pom.xml
Downloading: 
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/enforcer/its/menforcer134_model/1.0-20130423.044324-5,638/menforcer134_model-1.0-20130423.044324-5,638.pom
Downloading: 
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/enforcer/its/menforcer134_model/1.0-20130423.044324-5,638/menforcer134_model-1.0-20130423.044324-5,638.pom
Downloading: 
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/enforcer/its/menforcer134_model/1.0-20130423.042904-7,222/menforcer134_model-1.0-20130423.042904-7,222.pom
Downloading: 
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/enforcer/its/menforcer134_model/1.0-20130423.042904-7,222/menforcer134_model-1.0-20130423.042904-7,222.pom
[INFO] ..SUCCESS (2.7 s)
[INFO] Building: 
require-plugin-versions-plugin-with-integration-test-lifecycle/pom.xml
[INFO] ..SUCCESS (9.7 s)
[INFO] Building: evaluate-beanshell/pom.xml
[INFO] ..SUCCESS (2.9 s)
[INFO] Building: ban-transitive-dependencies/pom.xml
[INFO] ..SUCCESS (3.0 s)
[INFO] Building: require-files-dont-exist/pom.xml
[INFO] ..SUCCESS (2.7 s)
[INFO] Building: require-same-versions_success/pom.xml
[INFO] ..SUCCESS (2.7 s)
[INFO] Building: ban-pom-dependency-version/pom.xml
[INFO] run script verify.groovy
[INFO] ..SUCCESS (2.7 s)
[INFO] Building: always-pass/pom.xml
[INFO] ..SUCCESS (2.7 s)
[INFO] Building: never-fail-on-recommendations/pom.xml
[INFO] run script verify.groovy
[INFO] ..SUCCESS (5.0 s)
[INFO] Building: require-property/pom.xml
[INFO] ..SUCCESS (2.9 s)
[INFO] Building: require-maven-version/pom.xml
[INFO] ..SUCCESS (2.8 s)
[INFO] Building: resolve_collect_dependencies/pom.xml
[INFO] run script verify.groovy
[INFO] ..SUCCESS (4.5 s)
[INFO] Building: banned-plugins/pom.xml
[INFO] ..SUCCESS (2.8 s)
[INFO] Building: require-release-dependencies/pom.xml
[INFO] ..SUCCESS (2.7 s)
[INFO] Building: builds_a_pom_noop/pom.xml
[INFO] ..SUCCESS (2.7 s)
[INFO] -------------------------------------------------
[INFO] Build Summary:
[INFO]   Passed: 46, Failed: 0, Errors: 0, Skipped: 0
[INFO] -------------------------------------------------
[INFO] 
[INFO] --- mrm-maven-plugin:1.0-beta-1:stop (default) @ maven-enforcer-plugin 
---
[INFO] Stopping Mock Repository Manager on http://localhost:51430
[INFO] Mock Repository Manager http://localhost:51430 is stopped.
[INFO] 
[INFO] --- maven-install-plugin:2.5.1:install (default-install) @ 
maven-enforcer-plugin ---
[INFO] Installing 
<https://builds.apache.org/job/maven-enforcer/ws/maven-enforcer-plugin/target/maven-enforcer-plugin-2.0-SNAPSHOT.jar>
 to 
/home/jenkins/jenkins-slave/maven-repositories/0/org/apache/maven/plugins/maven-enforcer-plugin/2.0-SNAPSHOT/maven-enforcer-plugin-2.0-SNAPSHOT.jar
[INFO] Installing 
<https://builds.apache.org/job/maven-enforcer/ws/maven-enforcer-plugin/pom.xml> 
to 
/home/jenkins/jenkins-slave/maven-repositories/0/org/apache/maven/plugins/maven-enforcer-plugin/2.0-SNAPSHOT/maven-enforcer-plugin-2.0-SNAPSHOT.pom
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] Apache Maven Enforcer ............................. SUCCESS [24.566s]
[INFO] Apache Maven Enforcer API ......................... SUCCESS [6.086s]
[INFO] Apache Maven Enforcer Rules ....................... SUCCESS [26.664s]
[INFO] Apache Maven Enforcer Plugin ...................... SUCCESS [2:57.014s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4:00.746s
[INFO] Finished at: Sat Jun 14 21:01:45 UTC 2014
[INFO] Final Memory: 26M/67M
[INFO] ------------------------------------------------------------------------
Waiting for Jenkins to finish collecting data
[JENKINS] Archiving 
<https://builds.apache.org/job/maven-enforcer/ws/enforcer-rules/pom.xml> to 
org.apache.maven.enforcer/enforcer-rules/2.0-SNAPSHOT/enforcer-rules-2.0-SNAPSHOT.pom
[JENKINS] Archiving 
<https://builds.apache.org/job/maven-enforcer/ws/enforcer-rules/target/enforcer-rules-2.0-SNAPSHOT.jar>
 to 
org.apache.maven.enforcer/enforcer-rules/2.0-SNAPSHOT/enforcer-rules-2.0-SNAPSHOT.jar
[JENKINS] Archiving 
<https://builds.apache.org/job/maven-enforcer/ws/enforcer-rules/target/enforcer-rules-2.0-SNAPSHOT-tests.jar>
 to 
org.apache.maven.enforcer/enforcer-rules/2.0-SNAPSHOT/enforcer-rules-2.0-SNAPSHOT-tests.jar
Sending artifact delta relative to maven-enforcer ? Apache Maven Enforcer Rules 
#103
Archived 3 artifacts
Archive block size is 32768
Received 0 blocks and 189209 bytes
Compression is 0.0%
Took 2.4 sec
[JENKINS] Archiving 
<https://builds.apache.org/job/maven-enforcer/ws/enforcer-api/pom.xml> to 
org.apache.maven.enforcer/enforcer-api/2.0-SNAPSHOT/enforcer-api-2.0-SNAPSHOT.pom
[JENKINS] Archiving 
<https://builds.apache.org/job/maven-enforcer/ws/enforcer-api/target/enforcer-api-2.0-SNAPSHOT.jar>
 to 
org.apache.maven.enforcer/enforcer-api/2.0-SNAPSHOT/enforcer-api-2.0-SNAPSHOT.jar
Sending artifact delta relative to maven-enforcer ? Apache Maven Enforcer API 
#103
Archived 2 artifacts
Archive block size is 32768
Received 0 blocks and 13657 bytes
Compression is 0.0%
Took 1.8 sec
[JENKINS] Archiving <https://builds.apache.org/job/maven-enforcer/ws/pom.xml> 
to org.apache.maven.enforcer/enforcer/2.0-SNAPSHOT/enforcer-2.0-SNAPSHOT.pom
[JENKINS] Archiving 
<https://builds.apache.org/job/maven-enforcer/ws/target/enforcer-2.0-SNAPSHOT-site.xml>
 to 
org.apache.maven.enforcer/enforcer/2.0-SNAPSHOT/enforcer-2.0-SNAPSHOT-site.xml
Sending artifact delta relative to maven-enforcer ? Apache Maven Enforcer #103
Archived 2 artifacts
Archive block size is 32768
Received 0 blocks and 12494 bytes
Compression is 0.0%
Took 0.32 sec
[JENKINS] Archiving 
<https://builds.apache.org/job/maven-enforcer/ws/maven-enforcer-plugin/pom.xml> 
to 
org.apache.maven.plugins/maven-enforcer-plugin/2.0-SNAPSHOT/maven-enforcer-plugin-2.0-SNAPSHOT.pom
[JENKINS] Archiving 
<https://builds.apache.org/job/maven-enforcer/ws/maven-enforcer-plugin/target/maven-enforcer-plugin-2.0-SNAPSHOT.jar>
 to 
org.apache.maven.plugins/maven-enforcer-plugin/2.0-SNAPSHOT/maven-enforcer-plugin-2.0-SNAPSHOT.jar
Sending artifact delta relative to maven-enforcer ? Apache Maven Enforcer 
Plugin #103
Archived 2 artifacts
Archive block size is 32768
Received 0 blocks and 37445 bytes
Compression is 0.0%
Took 0.52 sec
channel stopped
Maven RedeployPublisher use remote ubuntu4 maven settings from : 
/home/jenkins/.m2/settings.xml
[INFO] Deployment in 
https://repository.apache.org/content/repositories/snapshots 
(id=apache.snapshots.https,uniqueVersion=true)
Deploying the main artifact enforcer-2.0-SNAPSHOT.pom
Downloading: 
https://repository.apache.org/content/repositories/snapshots/org/apache/maven/enforcer/enforcer/2.0-SNAPSHOT/maven-metadata.xml
ERROR: Failed to retrieve remote metadata 
org.apache.maven.enforcer:enforcer:2.0-SNAPSHOT/maven-metadata.xml: Could not 
transfer metadata 
org.apache.maven.enforcer:enforcer:2.0-SNAPSHOT/maven-metadata.xml from/to 
apache.snapshots.https 
(https://repository.apache.org/content/repositories/snapshots): Failed to 
transfer file: 
https://repository.apache.org/content/repositories/snapshots/org/apache/maven/enforcer/enforcer/2.0-SNAPSHOT/maven-metadata.xml.
 Return code is: 503 , ReasonPhrase:Service Temporarily Unavailable.
org.apache.maven.artifact.deployer.ArtifactDeploymentException: Failed to 
retrieve remote metadata 
org.apache.maven.enforcer:enforcer:2.0-SNAPSHOT/maven-metadata.xml: Could not 
transfer metadata 
org.apache.maven.enforcer:enforcer:2.0-SNAPSHOT/maven-metadata.xml from/to 
apache.snapshots.https 
(https://repository.apache.org/content/repositories/snapshots): Failed to 
transfer file: 
https://repository.apache.org/content/repositories/snapshots/org/apache/maven/enforcer/enforcer/2.0-SNAPSHOT/maven-metadata.xml.
 Return code is: 503 , ReasonPhrase:Service Temporarily Unavailable.
        at 
org.apache.maven.artifact.deployer.DefaultArtifactDeployer.deploy(DefaultArtifactDeployer.java:143)
        at 
hudson.maven.reporters.MavenArtifactRecord.deploy(MavenArtifactRecord.java:193)
        at hudson.maven.RedeployPublisher.perform(RedeployPublisher.java:176)
        at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
        at 
hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:804)
        at 
hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:776)
        at 
hudson.maven.MavenModuleSetBuild$MavenModuleSetBuildExecution.post2(MavenModuleSetBuild.java:1040)
        at 
hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:725)
        at hudson.model.Run.execute(Run.java:1701)
        at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:529)
        at hudson.model.ResourceController.execute(ResourceController.java:88)
        at hudson.model.Executor.run(Executor.java:231)
Caused by: org.eclipse.aether.deployment.DeploymentException: Failed to 
retrieve remote metadata 
org.apache.maven.enforcer:enforcer:2.0-SNAPSHOT/maven-metadata.xml: Could not 
transfer metadata 
org.apache.maven.enforcer:enforcer:2.0-SNAPSHOT/maven-metadata.xml from/to 
apache.snapshots.https 
(https://repository.apache.org/content/repositories/snapshots): Failed to 
transfer file: 
https://repository.apache.org/content/repositories/snapshots/org/apache/maven/enforcer/enforcer/2.0-SNAPSHOT/maven-metadata.xml.
 Return code is: 503 , ReasonPhrase:Service Temporarily Unavailable.
        at 
org.eclipse.aether.internal.impl.DefaultDeployer.upload(DefaultDeployer.java:470)
        at 
org.eclipse.aether.internal.impl.DefaultDeployer.deploy(DefaultDeployer.java:314)
        at 
org.eclipse.aether.internal.impl.DefaultDeployer.deploy(DefaultDeployer.java:269)
        at 
org.eclipse.aether.internal.impl.DefaultRepositorySystem.deploy(DefaultRepositorySystem.java:413)
        at 
org.apache.maven.artifact.deployer.DefaultArtifactDeployer.deploy(DefaultArtifactDeployer.java:139)
        ... 11 more
Caused by: org.eclipse.aether.transfer.MetadataTransferException: Could not 
transfer metadata 
org.apache.maven.enforcer:enforcer:2.0-SNAPSHOT/maven-metadata.xml from/to 
apache.snapshots.https 
(https://repository.apache.org/content/repositories/snapshots): Failed to 
transfer file: 
https://repository.apache.org/content/repositories/snapshots/org/apache/maven/enforcer/enforcer/2.0-SNAPSHOT/maven-metadata.xml.
 Return code is: 503 , ReasonPhrase:Service Temporarily Unavailable.
        at 
org.eclipse.aether.connector.wagon.WagonRepositoryConnector$5.wrap(WagonRepositoryConnector.java:995)
        at 
org.eclipse.aether.connector.wagon.WagonRepositoryConnector$5.wrap(WagonRepositoryConnector.java:983)
        at 
org.eclipse.aether.connector.wagon.WagonRepositoryConnector$GetTask.run(WagonRepositoryConnector.java:725)
        at 
org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:67)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.maven.wagon.TransferFailedException: Failed to transfer 
file: 
https://repository.apache.org/content/repositories/snapshots/org/apache/maven/enforcer/enforcer/2.0-SNAPSHOT/maven-metadata.xml.
 Return code is: 503 , ReasonPhrase:Service Temporarily Unavailable.
        at 
org.apache.maven.wagon.shared.http4.AbstractHttpClientWagon.fillInputData(AbstractHttpClientWagon.java:945)
        at 
org.apache.maven.wagon.StreamWagon.getInputStream(StreamWagon.java:116)
        at org.apache.maven.wagon.StreamWagon.getIfNewer(StreamWagon.java:88)
        at org.apache.maven.wagon.StreamWagon.get(StreamWagon.java:61)
        at 
org.eclipse.aether.connector.wagon.WagonRepositoryConnector$GetTask.run(WagonRepositoryConnector.java:660)
        ... 4 more
[INFO] Deployment failed after 1.5 sec
Build step 'Deploy artifacts to Maven repository' changed build result to 
FAILURE

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