go get的文件上哪去了

linux环境， 我设置了GOPATH， 和GOROOT， GOPATH=/home/xx/projects/ , 然后再该目录下建立了src文件夹， 我用 go get -u github.com/gin-gonic/gin 以下是命令的输出， 死活不见gin在哪里，在程序里也无法引用， go: github.com/gin-gonic/gin upgrade => v1.6.3 go: github.com/golang/protobuf upgrade => v1.4.2 go: gopkg.in/yaml.v2 upgrade => v2.3.0 go: github.com/json-iterator/go upgrade => v1.1.10 go: github.com/go-playground/validator/v10 upgrade => v10.3.0 go: github.com/modern-go/concurrent upgrade => v0.0.0-20180306012644-bacd9c7ef1dd go: github.com/modern-go/reflect2 upgrade => v1.0.1 go: golang.org/x/sys upgrade => v0.0.0-20200625212154-ddb9806d33ae go: google.golang.org/protobuf upgrade => v1.25.0 go get是不是被屏蔽了？？？