ARTIFACT %1 [%2] already has a child artifact %3 as different object

import qbs
import qbs.FileInfo
import qbs.TextFile

Project {
    Product {
        name: "test"
        multiplexByQbsProperties: ["architectures"]
        destinationDirectory: FileInfo.joinPaths(project.buildDirectory, qbs.architecture)
        Group {
            files: ["test.h"]
            qbs.install: true
            qbs.installDir: "include"
        }
        qbs.installPrefix: qbs.architecture
    }
    Product {
        name: "other"
        type: ["dummy"]
        Depends { name: "test" }
        Rule {
            multiplex: true
            inputsFromDependencies: ["installable"]
            Artifact {
                filePath: "dummy"
                fileTags: ["dummy"]
            }
            prepare: {
                var cmd = new JavaScriptCommand();
                cmd.silent = true;
                cmd.sourceCode = function() {
                    var tf;
                    try {
                        tf = new TextFile(output.filePath, TextFile.WriteOnly);
                    } finally {
                        if (tf)
                            tf.close();
                    }
                }
                return [cmd];
            }
        }
        qbs.installPrefix: qbs.architecture
    }
}