javax.servlet.HttpConstraintElement"'s signer information does not match signer information of other classes in the same package

This answer worked for me, using Servlet API 3.0.

The solution was to take the explicit dependency on servlet-api, and change it from provided to compile scope.

    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.0.1</version>
        <scope>compile</scope>
    </dependency>