Otherwise:

$ go test  -short -cpu=1,1,2,2
--- FAIL: TestLookupEnv (0.00s)
        env_test.go:102: SMALLPOX="virus"
--- FAIL: TestLookupEnv-2 (0.00s)
        env_test.go:102: SMALLPOX="virus"
--- FAIL: TestLookupEnv-2 (0.00s)
        env_test.go:102: SMALLPOX="virus"

Change-Id: Ic1f6dd1bae3c79c4f7da02bc8c30b5e599627a82
Reviewed-on: https://go-review.googlesource.com/9794Reviewed-by: Rob Pike <r@golang.org>