go telemetry
stdout 'on'
go env GOTELEMETRY
stdout 'on'

go env
stdout 'GOTELEMETRY=''?on''?'
stdout 'GOTELEMETRYDIR=''?'$userconfig'[\\/]go[\\/]telemetry''?'
! go env -w GOTELEMETRY=off
stderr '^go: unknown go command variable GOTELEMETRY$'
! go env -w GOTELEMETRYDIR=foo

mode. Without arguments, it displays the current mode. With `local`, `on`, or `off`, it sets
the collection mode. `go` `env` now lists two values: the `GOTELEMETRY` value, which
contains the telemetry collection mode, and the `GOTELEMETRYDIR` value setting which contains
the directory telemetry data and configuration are written to.

<!-- go.dev/issue/58894 ("all: add opt-in transparent telemetry to Go toolchain") -->

		{Name: "GOVCS", Value: cfg.GOVCS},
		{Name: "GOVERSION", Value: runtime.Version()},
		{Name: "GODEBUG", Value: os.Getenv("GODEBUG")},
		{Name: "GOTELEMETRY", Value: telemetry.Mode()},
		{Name: "GOTELEMETRYDIR", Value: telemetry.Dir()},
	}

	for i := range env {
		switch env[i].Name {
		case "GO111MODULE":
			if env[i].Value != "on" && env[i].Value != "" {
				env[i].Changed = true
			}