go clean -i -r breaks go vet vet: import failed: can't find import: fmt

[mmatczuk]

After running go clean -i -r ./... go vet breaks, please find the steps to reproduce below

mmatczuk:gotest$ tar xzf ~/downloads/go1.7.5.linux-amd64.tar.gz 
mmatczuk:gotest$ mkdir gopath
mmatczuk:gotest$ export GOROOT=$PWD/go
mmatczuk:gotest$ export GOPATH=$PWD/gopath
mmatczuk:gotest$ export PATH=$GOROOT/bin:$PATH
mmatczuk:gotest$ go version
go version go1.7.5 linux/amd64
mmatczuk:gotest$ go get github.com/mmatczuk/go-http-tunnel/...
mmatczuk:gotest$ cd gopath/src/github.com/mmatczuk/go-http-tunnel/
mmatczuk:go-http-tunnel$ go vet ./...
mmatczuk:go-http-tunnel$ go clean -i -r ./...
mmatczuk:go-http-tunnel$ go vet ./...
vet: import failed: can't find import: fmt
vet: import failed: can't find import: fmt
exit status 1
vet: import failed: can't find import: fmt
vet: import failed: can't find import: fmt
exit status 1
vet: import failed: can't find import: fmt
vet: import failed: can't find import: fmt
exit status 1
vet: import failed: can't find import: fmt
vet: import failed: can't find import: fmt
exit status 1
vet: import failed: can't find import: fmt
vet: import failed: can't find import: fmt
exit status 1
vet: import failed: can't find import: fmt
vet: import failed: can't find import: fmt
exit status 1
vet: import failed: can't find import: fmt
vet: import failed: can't find import: fmt
exit status 1
vet: import failed: can't find import: fmt
vet: import failed: can't find import: fmt
exit status 1
vet: import failed: can't find import: fmt
vet: import failed: can't find import: fmt
exit status 1
mmatczuk:go-http-tunnel$ go install ./...
mmatczuk:go-http-tunnel$ 

cc: @griesemer

[griesemer]

Duplicate of #11415.