Please, check scoverage/sbt-scoverage#151.
The multi-jvm configuration/scope is missing in its classpath the scoverage dependencies that are already in the provided scope.
I am assuming that this is a bug in the sbt-multi-jvm because this does not happen when running normal tests. Since multi-jvm SBT config extends test scope all dependencies available during tests should be available during multi-jvm tests too, so not sure why this one is not being correctly picked up.