Plugin can't seem to recognize layout.buildDirectory.dir(...) paths

[edudar-chwy]

I've configured the plugin using the Gradle-recommended way of referencing build resources:

sonar {
    properties {
        property("dc5.mutationAnalysis.pitest.sensor.reports.directory", layout.buildDirectory.dir("reports/pitest"))
    }
}

pitest {
    reportDir = layout.buildDirectory.dir("reports/pitest")
}

This results in report not found messages like

No report /Users/.../service/map(org.gradle.api.file.Directory property(org.gradle.api.file.Directory, fixed(class org.gradle.api.internal.file.DefaultFilePropertyFactory$FixedDirectory, /Users/.../service/build)) org.gradle.api.internal.file.DefaultFilePropertyFactory$PathToDirectoryTransformer@e8c5e04) found

Changing layout.buildDirectory.dir("reports/pitest") to file("build/reports/pitest") fixes this, and results appear in SonarQube UI. But that's not what Gradle recommends. It'd be good to support the layout.` directories.

A side note, given that finding a report is essential for the plugin to submit results, such messages should probably be WARN instead of DEBUG.