t.Fatalf("cmd.StdoutPipe failed: %v", err)
	}
	err = cmd.Start()
	if err != nil {
		t.Fatalf("cmd.Start failed: %v\n", err)
	}
	outReader := bufio.NewReader(stdout)
	for {
		s, err := outReader.ReadString('\n')
		if err != nil {
			t.Fatalf("reading stdout failed: %v", err)
		}
		if s == "sleeping\n" {
			break
		}
	}
	defer cmd.Wait() // ignore error - we know it is getting killed

                    FileSystems.newFileSystem(uri, mapOf<String, Any?>()).use { fs ->
                        val innerPath = fs.rootDirectories.iterator().next().resolve("foo.txt")
                        println(Files.readString(innerPath))
                    }
                }
            }

            apply<SomePlugin>()
        """

        when:
        configurationCacheRun("readFileWithinJarTask")

The Dial function connects to a server:

	conn, err := net.Dial("tcp", "golang.org:80")
	if err != nil {
		// handle error
	}
	fmt.Fprintf(conn, "GET / HTTP/1.0\r\n\r\n")
	status, err := bufio.NewReader(conn).ReadString('\n')
	// ...

The Listen function creates servers:

	ln, err := net.Listen("tcp", ":8080")
	if err != nil {
		// handle error
	}
	for {
		conn, err := ln.Accept()
		if err != nil {

				// to be lost, which may trigger our reads to fail.
				// See RFC 1122 page 88.
				t.Logf("On test %#v, acceptable error from ReadString: %v", test, err)
				return
			}
			t.Fatalf("On test %#v, ReadString: %v", test, err)
		}
		if !strings.Contains(line, test.expectedResponse) {
			t.Errorf("On test %#v, got first line = %q; want %q", test, line, test.expectedResponse)
		}

	if _, err := io.WriteString(rwc, "Hello\n"); err != nil {
		t.Fatalf("Failed to write first message: %v", err)
	}

	// Read loop.

	br := bufio.NewReader(rwc)
	for {
		line, err := br.ReadString('\n')
		switch {
		case line == terminalMsg: // this case before "err == io.EOF"
			t.Fatalf("The websocket request was not canceled, unfortunately!")

		case err == io.EOF:
			return

		// report an error at that time.
		unknownObjFormat = true
		return ldhostobj(nil, ctxt.HeadType, f, pkg, length, pn, file)
	}

	/* check the header */
	line, err := f.ReadString('\n')
	if err != nil {
		Errorf(nil, "truncated object file: %s: %v", pn, err)
		return nil
	}

	if !strings.HasPrefix(line, "go object ") {
		if strings.HasSuffix(pn, ".go") {

			t.Error(err)
			return
		}
		defer nc.Close()
		nc.Write([]byte("HTTP/1.1 200 OK\r\n\r\n"))
		// Switch to a little protocol that capitalize its input lines:
		for {
			line, err := brw.ReadString('\n')
			if err != nil {
				if err != io.EOF {
					t.Error(err)
				}
				return
			}
			io.WriteString(brw, strings.ToUpper(line))
			brw.Flush()
		}
	}))