mvn Jetty war:war not compiling maven-metadata-central.xml error

[khan via StackOverflow]

When I try to run the mvn jetty war:war in the command line for the java glass quick start I keep getting maven-metadata.xml errors about white space content before the start tag and not H Is this something wrong with my maven install ?

    C:\mirror-quickstart-java-master3>mvn jetty war:war
[INFO] Scanning for projects...
[WARNING] The metadata C:\Users\Khan\.m2\repository\org\apache\maven\plugins\maven-metadata-central.xml is invalid: only whitespace content allowed before start tag and not H (position: START_DOCUMENT seen H... @1:1)
[WARNING] The metadata C:\Users\Khan\.m2\repository\org\codehaus\mojo\maven-metadata-central.xml is invalid: only whitespace content allowed before start tag and not H (position: START_DOCUMENT seen H... @1:1)
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml
Downloading: http://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml
[WARNING] Checksum validation failed, expected HTTP/1.0 but is 714503610c9a173e122c6fb075240eeb29958387 for http://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml
[WARNING] Checksum validation failed, expected HTTP/1.0 but is 714503610c9a173e122c6fb075240eeb29958387 for http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml
[WARNING] Checksum validation failed, expected HTTP/1.0 but is 714503610c9a173e122c6fb075240eeb29958387 for http://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml
Downloaded: http://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml (184 B at 0.1 KB/sec)
[WARNING] Checksum validation failed, expected HTTP/1.0 but is 714503610c9a173e122c6fb075240eeb29958387 for http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml
Downloaded: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml (184 B at 0.1 KB/sec)
[WARNING] The metadata C:\Users\Khan\.m2\repository\org\apache\maven\plugins\maven-metadata-central.xml is invalid: only whitespace content allowed before start tag and not H (position: START_DOCUMENT seen H... @1:1)
[WARNING] The metadata C:\Users\Khan\.m2\repository\org\codehaus\mojo\maven-metadata-central.xml is invalid: only whitespace content allowed before start tag and not H (position: START_DOCUMENT seen H... @1:1)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE    
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.920s
[INFO] Finished at: Tue Aug 27 10:27:18 PDT 2013
[INFO] Final Memory: 9M/182M
[INFO] ------------------------------------------------------------------------
[ERROR] No plugin found for prefix 'war' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (C:\Users\Khan\.m2\repository), central (http
://repo.maven.apache.org/maven2)] -> [Help 1]
[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/NoPluginFoundForPrefixException
C:\mirror-quickstart-java-master3>mvn clean compile package war:war
[INFO] Scanning for projects...
[WARNING] The metadata C:\Users\Khan\.m2\repository\org\apache\maven\plugins\maven-metadata-central.xml is invalid: only whitespace content allowed before start tag and not H (position: START_DOCUMENT seen H... @1:1)
[WARNING] The metadata C:\Users\Khan\.m2\repository\org\codehaus\mojo\maven-metadata-central.xml is invalid: only whitespace content allowed before start tag and not H (position: START_DOCUMENT seen H... @1:1)
Downloading: http://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml
Downloaded: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml (12 KB at 15.0 KB/sec)
Downloaded: http://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml (22 KB at 27.0 KB/sec)
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building glass-java-starter 0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ glass-java-starter ---
[INFO] Deleting C:\mirror-quickstart-java-master3\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ glass-java-starter ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ glass-java-starter ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 11 source files to C:\mirror-quickstart-java-master3\target\classes
[WARNING] /C:/mirror-quickstart-java-master3/src/main/java/com/google/glassware/AuthUtil.java: C:\mirror-quickstart-java-master3\src\main\java\com\google\glassware\AuthUtil.java uses or overrides a deprecated API.
[WARNING] /C:/mirror-quickstart-java-master3/src/main/java/com/google/glassware/AuthUtil.java: Recompile with -Xlint:deprecation for details.
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ glass-java-starter ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ glass-java-starter ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ glass-java-starter ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory C:\mirror-quickstart-java-master3\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ glass-java-starter ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ glass-java-starter ---
[INFO] No tests to run.
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ glass-java-starter ---
[INFO] Building jar: C:\mirror-quickstart-java-master3\target\glass-java-starter-0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-war-plugin:2.4:war (default-cli) @ glass-java-starter ---
[INFO] Packaging webapp
[INFO] Assembling webapp [glass-java-starter] in [C:\mirror-quickstart-java-master3\target\glass-java-starter-0.1-SNAPSHOT]
[INFO] Processing war project
[INFO] Copying webapp resources [C:\mirror-quickstart-java-master3\src\main\webapp]
[INFO] Webapp assembled in [486 msecs]
[INFO] Building war: C:\mirror-quickstart-java-master3\target\glass-java-starter-0.1-SNAPSHOT.war
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6.871s
[INFO] Finished at: Tue Aug 27 10:50:03 PDT 2013
[INFO] Final Memory: 17M/179M
[INFO] ------------------------------------------------------------------------
C:\mirror-quickstart-java-master3>

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