Mvn package command doesn't run successfully after mvn clean command if done from command prompt?

Eclipse maven plugin also installs another copy of Maven (core). So, few of things would work differently while running maven command through eclipse VS Command line. To get away from this situation configure your eclipse to use maven installation you're expecting it to use.

Window --> Preferences --> Maven--> Installations and change the setting to point to the local copy you've downloaded.

As other posters have started to point out, you're attempting to compile code that is language level 5 (Java 5) compliant (it uses annotations), but your compiler settings are set for language level 1.3.

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