empty cobertura file

cobertura.xml

<?xml version="1.0" ?>
<!DOCTYPE coverage SYSTEM "http://cobertura.sourceforge.net/xml/coverage-04.dtd">
<coverage lines-valid="0"  lines-covered="0"  line-rate="0"  branches-valid="0"  branches-covered="0"  branch-rate="0"  timestamp="1394890504210" complexity="0" version="0.1">
</coverage>

junit.xml

<?xml version="1.0" encoding="UTF-8"?>
<testsuites disabled="" errors="" failures="" name="" tests="" time="">
    <testsuite disabled="" errors="" failures="" hostname="" id=""
               name="" package="" skipped="" tests="" time="" timestamp="">
        <properties>
            <property name="" value=""/>
        </properties>
        <testcase assertions="" classname="" name="" status="" time="">
            <skipped/>
            <error message="" type=""/>
            <failure message="" type=""/>
            <system-out/>
            <system-err/>
        </testcase>
        <system-out/>
        <system-err/>
    </testsuite>
</testsuites>