Программирование на Go. Структурирование кода программы. ООП

 package main 
 
import ( 
 "fmt" 
 "time" 
) 
 
type User struct { 
 ID    int 
 Name  string 
 Email string 
 Age   int 
} 
 
type Report struct { 
 User     User 
 ReportID int 
 Date     string 
} 
 
func generateReportID() int { 
 return int(time.Now().UnixNano()) 
} 
 
func CreateReport(user User, reportDate string) Report { 
 reportID := generateReportID() 
 
 report := Report{ 
  User:     user, 
  ReportID: reportID, 
  Date:     reportDate, 
 } 
 
 return report 
} 
 
func PrintReport(report Report) { 
 fmt.Printf("Отчет №%d\n", report.ReportID) 
 fmt.Printf("Дата: %s\n", report.Date) 
 fmt.Printf("Пользователь:\n") 
 fmt.Printf("\tID: %d\n", report.User.ID) 
 fmt.Printf("\tИмя: %s\n", report.User.Name) 
 fmt.Printf("\tЭлектронная почта: %s\n", report.User.Email) 
 fmt.Printf("\tВозраст: %d\n", report.User.Age) 
} 
 
func GenerateUserReports(users []User, reportDate string) []Report { 
 var reports []Report 
 
 for _, user := range users { 
  report := CreateReport(user, reportDate) 
  reports = append(reports, report) 
 } 
 
 return reports 
} 
 
func main() {} 
 

Почините ошибки при компиляции кода пожалуйста, и объясните их фикс):
# command-line-arguments [command-line-arguments.test]
./source_test.go:15:12: report.ID undefined (type Report has no field or method ID)
./source_test.go:16:102: report.ID undefined (type Report has no field or method ID)
./source_test.go:18:12: report.Name undefined (type Report has no field or method Name)
./source_test.go:19:108: report.Name undefined (type Report has no field or method Name)
./source_test.go:21:12: report.Email undefined (type Report has no field or method Email)
./source_test.go:22:108: report.Email undefined (type Report has no field or method Email)
./source_test.go:24:12: report.Age undefined (type Report has no field or method Age)
./source_test.go:25:115: report.Age undefined (type Report has no field or method Age)
make: *** [Makefile:5: run] Error 1