Please answer these questions before submitting your issue. Thanks!

What version of Go are you using (go version)?

go version go1.8.3 darwin/amd64

What operating system and processor architecture are you using (go env)?

GOARCH="amd64"
GOHOSTARCH="amd64"
GOOS="darwin"
GOHOSTOS="darwin"

What did you do?

I tried to run the go-contrib-init command while my Go environment was in a half-setup state. I did this by simply unsetting GOROOT in my shell, and then executing the command.

What did you expect to see?

I expected the command to exit, indicating that it failed to install git-codereview.

What did you see instead?

Error running go get golang.org/x/review/git-codereview: exit status 1
Installed git-codereview (ran `go get golang.org/x/review/git-codereview`)
All good. Happy hacking!
Remember to squash your revised commits and preserve the magic Change-Id lines.
Next steps: https://golang.org/doc/contribute.html#commit_changes

We are checking the error returned by running that command, but we don't seem to exit if we fail to install the git-codereview package. Instead we print the error indicating it failed, but then continue operating as-if that didn't happen (including a log line indicating it succeeded):

• https://github.com/golang/tools/blob/d78e5d2552f0118165e0525719c6ab6b9eaebc4e/cmd/go-contrib-init/contrib.go#L264-L268