在执行 clean package 出现以下问题：

好像是下载时出现的问题

[INFO] Scanning for projects...

[INFO]                                                                         

[INFO] ------------------------------------------------------------------------

[INFO] Building maventest 0.0.1-SNAPSHOT

[INFO] ------------------------------------------------------------------------

[WARNING] The POM for org.apache.plugins:maven-source-plugin:jar:2.4 is missing, no dependency information available

[INFO] ------------------------------------------------------------------------

[INFO] BUILD FAILURE

[INFO] ------------------------------------------------------------------------

[INFO] Total time: 0.517 s

[INFO] Finished at: 2016-07-28T16:52:01+08:00

[INFO] Final Memory: 7M/155M

[INFO] ------------------------------------------------------------------------

[ERROR] Plugin org.apache.plugins:maven-source-plugin:2.4 or one of its dependencies                  could not be resolved: Failure to find org.apache.plugins:maven-source-                            plugin:jar:2.4 in http://10.204.105.107:8080/nexus/content/groups/public/ was                cached in the local repository, resolution will not be reattempted until the update                interval of public has elapsed or updates are forced -> [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/PluginResolutionException