Golang 包导入

这是我第一次在这里提问，无论如何，我想知道为什么它说找不到包裹，即使github.com/JohnDoe/temperature/conversion/conv在里面$GOPATH

[johndoe@johndoe temperature]$ go run main.go

main.go:5:2: cannot find package "github.com/JohnDoe/temperature/conversion/conv" in any of:

    /usr/local/go/src/github.com/JohnDoe/temperature/conversion/conv (from $GOROOT)

    /home/johndoe/Workspace/Go/src/github.com/JohnDoe/temperature/conversion/conv (from $GOPATH)

更多细节：

[johndoe@johndoe conversion]$ pwd

/home/johndoe/Workspace/Go/src/github.com/JohnDoe/temperature/conversion

[johndoe@johndoe conversion]$ ls

conv.go

想法？