vscode 安装 go插件

安装

1.goreturns: go get -u -v sourcegraph.com/sqs/goreturns

报错：

Fetching https://sourcegraph.com/sqs/goreturns?go-get=1
Parsing meta tags from https://sourcegraph.com/sqs/goreturns?go-get=1 (status co
de 200)  
get "sourcegraph.com/sqs/goreturns": found meta tag main.metaImport{Prefix:"sourcegraph.com/sqs/goreturns", VCS:"git", RepoRoot:"https://github.com/sqs/goreturn
s"} at https://sourcegraph.com/sqs/goreturns?go-get=1
sourcegraph.com\sqs\goreturns (download)
Fetching https://golang.org/x/tools/go/gcimporter?go-get=1
https fetch failed.
Fetching http://golang.org/x/tools/go/gcimporter?go-get=1
import "golang.org/x/tools/go/gcimporter": http/https fetch: Get http://golang.o
rg/x/tools/go/gcimporter?go-get=1: dial tcp 74.125.203.141:80: ConnectEx tcp: A
connection attempt failed because the connected party did not properly respond a
fter a period of time, or established connection failed because connected host h
as failed to respond.
package sourcegraph.com/sqs/goreturns
        imports golang.org/x/tools/go/gcimporter: unrecognized import path "gola
ng.org/x/tools/go/gcimporter"
Fetching https://golang.org/x/tools/go/types?go-get=1
https fetch failed.
Fetching http://golang.org/x/tools/go/types?go-get=1
import "golang.org/x/tools/go/types": http/https fetch: Get http://golang.org/x/
tools/go/types?go-get=1: dial tcp 74.125.203.141:80: ConnectEx tcp: A connection
 attempt failed because the connected party did not properly respond after a per
iod of time, or established connection failed because connected host has failed
to respond.
package sourcegraph.com/sqs/goreturns
        imports golang.org/x/tools/go/types: unrecognized import path "golang.or
g/x/tools/go/types"
Fetching https://golang.org/x/tools/imports?go-get=1
https fetch failed.
Fetching http://golang.org/x/tools/imports?go-get=1
import "golang.org/x/tools/imports": http/https fetch: Get http://golang.org/x/t
ools/imports?go-get=1: dial tcp 74.125.203.141:80: ConnectEx tcp: A connection a
ttempt failed because the connected party did not properly respond after a perio
d of time, or established connection failed because connected host has failed to
 respond.
package sourcegraph.com/sqs/goreturns
        imports golang.org/x/tools/imports: unrecognized import path "golang.org
/x/tools/imports"
Fetching https://sourcegraph.com/sqs/goreturns/returns?go-get=1
Parsing meta tags from https://sourcegraph.com/sqs/goreturns/returns?go-get=1 (s
tatus code 200)
get "sourcegraph.com/sqs/goreturns/returns": found meta tag main.metaImport{Pref
ix:"sourcegraph.com/sqs/goreturns", VCS:"git", RepoRoot:"https://github.com/sqs/
goreturns"} at https://sourcegraph.com/sqs/goreturns/returns?go-get=1
get "sourcegraph.com/sqs/goreturns/returns": verifying non-authoritative meta ta
g
Fetching https://sourcegraph.com/sqs/goreturns?go-get=1
Parsing meta tags from https://sourcegraph.com/sqs/goreturns?go-get=1 (status co
de 200)

2.gorename: go get -u -v golang.org/x/tools/cmd/gorename

报错：

package golang.org/x/tools/cmd/gorename: unrecognized import path "golang.org/x/
tools/cmd/gorename"

3.golint: go get -u -v github.com/golang/lint/golint

报错：

github.com\golang\lint (download)
Fetching https://golang.org/x/tools/go/gcimporter?go-get=1
https fetch failed.
Fetching http://golang.org/x/tools/go/gcimporter?go-get=1
import "golang.org/x/tools/go/gcimporter": http/https fetch: Get http://golang.o
rg/x/tools/go/gcimporter?go-get=1: dial tcp 173.194.72.141:80: ConnectEx tcp: A
connection attempt failed because the connected party did not properly respond a
fter a period of time, or established connection failed because connected host h
as failed to respond.
package github.com/golang/lint/golint
        imports github.com/golang/lint
        imports golang.org/x/tools/go/gcimporter: unrecognized import path "gola
ng.org/x/tools/go/gcimporter"
Fetching https://golang.org/x/tools/go/types?go-get=1
https fetch failed.
Fetching http://golang.org/x/tools/go/types?go-get=1
import "golang.org/x/tools/go/types": http/https fetch: Get http://golang.org/x/
tools/go/types?go-get=1: dial tcp 173.194.72.141:80: ConnectEx tcp: A connection
 attempt failed because the connected party did not properly respond after a per
iod of time, or established connection failed because connected host has failed
to respond.
package github.com/golang/lint/golint
        imports github.com/golang/lint
        imports golang.org/x/tools/go/types: unrecognized import path "golang.or
g/x/tools/go/types"

这几个总是报错