byCategory.getOrPut(toCategory(version, file.nameWithoutExtension)) {
                    mutableMapOf()
                }.getOrPut(file.nameWithoutExtension) {
                    mutableSetOf()
                }.add(problem)
            }
        }
        generateReport(byCategory)
    }

    private
    fun toCategory(version: String, gradleModule: String) = when {