checking out core, trying: mvn package

Result will be:

[...many more...]
testSettingAnUtf8NodeData(info.magnolia.utf8.Utf8ContentTest): Unable to delete file: target\repositories\magnolia\.lock
testSettingAnUtf8NodeData(info.magnolia.utf8.Utf8ContentTest): Unable to delete file: target\repositories\magnolia\.lock
testSettingNewUtf8ContentNode(info.magnolia.utf8.Utf8ContentTest): Unable to delete file: target\repositories\magnolia\.lock
testSettingNewUtf8ContentNode(info.magnolia.utf8.Utf8ContentTest): Unable to delete file: target\repositories\magnolia\.lock

Tests run: 1165, Failures: 0, Errors: 151, Skipped: 3

All 151 errors have the same reason. The mentioned file does not reside in the mentioned folder. Don't know if it was ever created.