redis - goalng编译时找不到包

windows 7 64位系统，golang 版本1.2
go默认安装在c:\Go
GOPATH为c:\Go_path

测试alphazero/Go-Redis，过程如下
文件位置c:\go_test\re.go，代码如下：

package main

import (
    "bufio"
    "fmt"
    "github.com/alphazero/Go-Redis/redis"
    "log"
    "os"
)

func main() {
    spec := redis.DefaultSpec().Db(13)
    client, e := redis.NewSynchClientWithSpec(spec)
    if e != nil {
        log.Println("failed to create the client", e)
        return
    }

    key := "examples/hello/user.name"
    value, e := client.Get(key)
    if e != nil {
        log.Println("error on Get", e)
        return
    }

    if value == nil {
        fmt.Printf("\nHello, don't believe we've met before!\nYour name? ")
        reader := bufio.NewReader(os.Stdin)
        user, _ := reader.ReadString(byte('\n'))
        if len(user) > 1 {
            user = user[0 : len(user)-1]
            value = []byte(user)
            client.Set(key, value)
        } else {
            fmt.Printf("vafanculo!\n")
            return
        }
    }
    fmt.Printf("Hey, ciao %s!\n", fmt.Sprintf("%s", value))
}

c:\go_path目录下有pkg,src,bin，3个目录
首先获取redis包，执行如下命令

go get github.com/alphazero/Go-Redis/redis

获取成功，如图，
C:\Go_path\pkg\windows_amd64\github.com\alphazero目录生成了Go-Redis.a

cmd进入c:\go_test\,执行

go run re.go

提示

c:\go_test>go run re.go
re.go:6:2: cannot find package "github.com/alphazero/Go-Redis/redis" in any of:
        C:\Go\src\pkg\github.com\alphazero\Go-Redis\redis (from $GOROOT)
        C:\Go_path\src\github.com\alphazero\Go-Redis\redis (from $GOPATH)

C:\Go_path\src\github.com\alphazero\Go-Redis\目录确实有redis.go文件的
一直编译不成功，请问这个是什么情况？