Build failed in Jenkins: java-opensaml » OpenSAML :: Storage Implementation #472

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See <https://build.shibboleth.net/jenkins/job/java-opensaml/org.opensaml$opensaml-storage-impl/472/display/redirect?page=changes>

Changes:

[Scott Cantor] Convert null/empty checks for style.

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[INFO] Building OpenSAML :: Storage Implementation 3.4.0-SNAPSHOT
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[INFO] --- maven-clean-plugin:3.0.0:clean (default-clean) @ opensaml-storage-impl ---
[INFO] Deleting <https://build.shibboleth.net/jenkins/job/java-opensaml/org.opensaml$opensaml-storage-impl/ws/target>
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[INFO] --- maven-resources-plugin:2.7:resources (default-resources) @ opensaml-storage-impl ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
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[INFO] --- maven-compiler-plugin:3.3:compile (default-compile) @ opensaml-storage-impl ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 22 source files to <https://build.shibboleth.net/jenkins/job/java-opensaml/org.opensaml$opensaml-storage-impl/ws/target/classes>
[INFO] <https://build.shibboleth.net/jenkins/job/java-opensaml/org.opensaml$opensaml-storage-impl/ws/src/main/java/org/opensaml/storage/impl/memcached/MemcachedStorageService.java>: Some input files use unchecked or unsafe operations.
[INFO] <https://build.shibboleth.net/jenkins/job/java-opensaml/org.opensaml$opensaml-storage-impl/ws/src/main/java/org/opensaml/storage/impl/memcached/MemcachedStorageService.java>: Recompile with -Xlint:unchecked for details.
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[WARNING] COMPILATION WARNING : 
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[WARNING] <https://build.shibboleth.net/jenkins/job/java-opensaml/org.opensaml$opensaml-storage-impl/ws/src/main/java/org/opensaml/storage/impl/ServletRequestScopedStorageService.java>:[72,28] org.opensaml.storage.RequestScopedStorageService in org.opensaml.storage has been deprecated
[WARNING] <https://build.shibboleth.net/jenkins/job/java-opensaml/org.opensaml$opensaml-storage-impl/ws/src/main/java/org/opensaml/storage/impl/ServletRequestScopedStorageService.java>:[91,16] org.opensaml.storage.RequestScopedStorageService in org.opensaml.storage has been deprecated
[INFO] 2 warnings 
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[ERROR] COMPILATION ERROR : 
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[ERROR] <https://build.shibboleth.net/jenkins/job/java-opensaml/org.opensaml$opensaml-storage-impl/ws/src/main/java/org/opensaml/storage/impl/client/LoadClientStorageServices.java>:[38,23] package org.testng.util does not exist
[ERROR] <https://build.shibboleth.net/jenkins/job/java-opensaml/org.opensaml$opensaml-storage-impl/ws/src/main/java/org/opensaml/storage/impl/ServletRequestScopedStorageService.java>:[77,23] package org.testng.util does not exist
[ERROR] <https://build.shibboleth.net/jenkins/job/java-opensaml/org.opensaml$opensaml-storage-impl/ws/src/main/java/org/opensaml/storage/impl/client/LoadClientStorageServices.java>:[203,36] cannot find symbol
  symbol:   variable Strings
  location: class org.opensaml.storage.impl.client.LoadClientStorageServices<InboundMessageType,OutboundMessageType>
[ERROR] <https://build.shibboleth.net/jenkins/job/java-opensaml/org.opensaml$opensaml-storage-impl/ws/src/main/java/org/opensaml/storage/impl/ServletRequestScopedStorageService.java>:[319,36] cannot find symbol
  symbol:   variable Strings
  location: class org.opensaml.storage.impl.ServletRequestScopedStorageService
[INFO] 4 errors 
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[JENKINS] Archiving disabled