count = flag.Uint("test.count", 1, "run tests and benchmarks `n` times")
	coverProfile = flag.String("test.coverprofile", "", "write a coverage profile to `file`")
	gocoverdir = flag.String("test.gocoverdir", "", "write coverage intermediate files to this directory")
	matchList = flag.String("test.list", "", "list tests, examples, and benchmarks matching `regexp` then exit")

				return err
			}
		}
		// Even though we are passing the -test.gocoverdir option to
		// the test binary, also set GOCOVERDIR as well. This is
		// intended to help with tests that run "go build" to build
		// fresh copies of tools to test as part of the testing.
		addToEnv = "GOCOVERDIR=" + gcd
	}