R4.1 vcenter-plugin build failure

R4.1 ubuntu16 builds aren’t going through because of below mentioned problem.
http://cs-build.contrail.juniper.net:8080/job/Nightly-Ubuntu-1604-Build/228/artifact/sandbox/build-info/package-debug.log

make[2]: Leaving directory '/home/contrail-builder/workspace/Nightly-Ubuntu-1604-Build/sandbox/tools/packaging/common/debian/vcenter-plugin/vijava'
(cd java-api && make all)
make[2]: Entering directory '/home/contrail-builder/workspace/Nightly-Ubuntu-1604-Build/sandbox/tools/packaging/common/debian/vcenter-plugin/java-api'
mkdir -p ./../build/java-api
cp -ar * ./../build/java-api
cp -ar ../controller ../build/
cp -ar ../generateds ../build/
(cd ./../build/java-api; mvn install)
[INFO] Scanning for projects...
[WARNING]
[WARNING] Some problems were encountered while building the effective model for net.juniper.contrail:juniper-contrail-api:jar:3.0-SNAPSHOT
[WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-compiler-plugin is missing. @ line 89, column 14
[WARNING] 'build.plugins.plugin.version' for org.codehaus.mojo:exec-maven-plugin is missing. @ line 97, column 15
[WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-surefire-plugin is missing. @ line 131, column 15
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING]
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building juniper-contrail-api 3.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- exec-maven-plugin:1.6.0:exec (default) @ juniper-contrail-api ---
WARNING:ifmap_model:route-target not found in xml schema
WARNING:ifmap_model:bgp-router not found in xml schema
WARNING:ifmap_model:routing-policy not found in xml schema
WARNING:ifmap_model:customer-attachment not found in xml schema
WARNING:ifmap_model:provider-attachment not found in xml schema
WARNING:ifmap_model:routing-instance not found in xml schema
WARNING:ifmap_model:route-aggregate not found in xml schema
type SequenceType count: 2
type AddressType count: 3
type PortType count: 4
type MirrorActionType count: 2
type StaticMirrorNhType count: 2
type MatchConditionType count: 2
type IpamSubnetType count: 2
type AllocationPoolType count: 3
[INFO]
[INFO] --- build-helper-maven-plugin:1.4:add-source (add-wsdl-source) @ juniper-contrail-api ---
[INFO] Source directory: /home/contrail-builder/workspace/Nightly-Ubuntu-1604-Build/sandbox/tools/packaging/common/debian/vcenter-plugin/build/java-api/src added.
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ juniper-contrail-api ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.2:compile (default-compile) @ juniper-contrail-api ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 158 source files to /home/contrail-builder/workspace/Nightly-Ubuntu-1604-Build/sandbox/tools/packaging/common/debian/vcenter-plugin/build/java-api/target/classes
[INFO] /home/contrail-builder/workspace/Nightly-Ubuntu-1604-Build/sandbox/tools/packaging/common/debian/vcenter-plugin/build/java-api/src/net/juniper/contrail/api/ApiConnectorImpl.java: /home/contrail-builder/workspace/Nightly-Ubuntu-1604-Build/sandbox/tools/packaging/common/debian/vcenter-plugin/build/java-api/src/net/juniper/contrail/api/ApiConnectorImpl.java uses or overrides a deprecated API.
[INFO] /home/contrail-builder/workspace/Nightly-Ubuntu-1604-Build/sandbox/tools/packaging/common/debian/vcenter-plugin/build/java-api/src/net/juniper/contrail/api/ApiConnectorImpl.java: Recompile with -Xlint:deprecation for details.
[INFO] /home/contrail-builder/workspace/Nightly-Ubuntu-1604-Build/sandbox/tools/packaging/common/debian/vcenter-plugin/build/java-api/src/net/juniper/contrail/api/ApiConnectorMock.java: /home/contrail-builder/workspace/Nightly-Ubuntu-1604-Build/sandbox/tools/packaging/common/debian/vcenter-plugin/build/java-api/src/net/juniper/contrail/api/ApiConnectorMock.java uses unchecked or unsafe operations.
[INFO] /home/contrail-builder/workspace/Nightly-Ubuntu-1604-Build/sandbox/tools/packaging/common/debian/vcenter-plugin/build/java-api/src/net/juniper/contrail/api/ApiConnectorMock.java: Recompile with -Xlint:unchecked for details.
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ juniper-contrail-api ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 1 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.2:testCompile (default-testCompile) @ juniper-contrail-api ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 4 source files to /home/contrail-builder/workspace/Nightly-Ubuntu-1604-Build/sandbox/tools/packaging/common/debian/vcenter-plugin/build/java-api/target/test-classes
[INFO] /home/contrail-builder/workspace/Nightly-Ubuntu-1604-Build/sandbox/tools/packaging/common/debian/vcenter-plugin/build/java-api/test/net/juniper/contrail/api/ContrailApiMockTest.java: /home/contrail-builder/workspace/Nightly-Ubuntu-1604-Build/sandbox/tools/packaging/common/debian/vcenter-plugin/build/java-api/test/net/juniper/contrail/api/ContrailApiMockTest.java uses unchecked or unsafe operations.
[INFO] /home/contrail-builder/workspace/Nightly-Ubuntu-1604-Build/sandbox/tools/packaging/common/debian/vcenter-plugin/build/java-api/test/net/juniper/contrail/api/ContrailApiMockTest.java: Recompile with -Xlint:unchecked for details.
[INFO]
[INFO] --- maven-surefire-plugin:2.17:test (default-test) @ juniper-contrail-api ---
[INFO] Surefire report directory: /home/contrail-builder/workspace/Nightly-Ubuntu-1604-Build/sandbox/tools/packaging/common/debian/vcenter-plugin/build/java-api/target/surefire-reports

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T E S T S
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Error: Could not find or load main class org.apache.maven.surefire.booter.ForkedBooter