无法使用代码构建：“在此块中重新声明”

Question

当我尝试构建 ( go build hello.go) 以下代码时：

// ~/go/src/myproj/hello.go
package main

import "fmt"

func main() {
    fmt.Printf("hello, world\n")
}

我收到以下错误：

# runtime/internal/atomic
/usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:13:6: Load redeclared in this block
    previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:16:24
/usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:19:6: Loadp redeclared in this block
    previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:22:32
/usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:25:6: Load64 redeclared in this block
    previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:28:26
/usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:31:6: LoadAcq redeclared in this block
    previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:34:27
/usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:36:6: Xadd redeclared in this block
    previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:39:37
/usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:39:6: Xadd64 redeclared in this block
    previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:42:39
/usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:42:6: Xadduintptr redeclared in this block
    previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:45:47
/usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:45:6: Xchg redeclared in this block
    previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:48:36
/usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:48:6: Xchg64 redeclared in this block
    previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:51:38
/usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:51:6: Xchguintptr redeclared in this block
    previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:54:45
/usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:51:6: too many errors

我的 Go 设置：
Go 版本：go1.14.4 linux/amd64
GOPATH：/home/jiren/go
GOROOT：/usr/local/go
PATH：PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin:/usr/local/go/bin

知道有什么问题吗？

我希望有人能解释我如何解决这个问题。
我知道是什么意思GOPATH，并GOROOT因此没有必要参考我其他的解决方案\文档。

Answer 1

@Burak Serdar 建议重新安装 Go 解决了这个问题。
出现问题是因为我在以前的 Go 上安装了新版本的 Go。

解决方法：
1.删除 Go：rm -rvf /usr/local/go/
2. 从Golang 网站重新安装：

cd ~/go/Downloads
// Depends on the version you download
tar -C /usr/local -xzf go1.14.4.linux-amd64.tar.gz
export PATH=$PATH:/usr/local/go/bin
cd ~/go/src/myproj/
go build
// no errors