testDirectory.file("buildSrc/build.gradle") << """
            def inputFile = file("testInput.txt")
            def echoTask = tasks.register("echo") {
                doLast {
                    def fin = new FileInputStream(inputFile)
                    try {
                        System.out.bytes = fin.bytes
                    } finally {

                            Thread.sleep(1000)
                        }
                    }
                }
            }

            abstract class Extract extends DefaultTask {
                @InputFile
                abstract RegularFileProperty getArchiveFile()
                @OutputDirectory
                abstract DirectoryProperty getDestinationDir()

                @Inject

    }

    def "reports type validation failure"() {
        enableProblemsApiCheck()
        buildFile << '''
            class CustomTask extends DefaultTask {
                @InputFile File srcFile
                @OutputFile File destFile

                @TaskAction
                void action() {}
            }

            task custom(type: CustomTask)
        '''