}
			}

			// Customized parser should be identical to general parser.
			switch got, ok := ParseRFC3339(s, tz); {
			case ok != (err1 == nil):
				t.Fatalf("ParseRFC3339(%q) error mismatch:\n\tgot:  %v\n\twant: %v", s, ok, err1 == nil)
			case !equalTime(got, t1):
				t.Fatalf("ParseRFC3339(%q) value mismatch:\n\tgot:  %v\n\twant: %v", s, got, t2)
			}
		}
	})

func Parse(layout, value string) (Time, error) {
	// Optimize for RFC3339 as it accounts for over half of all representations.
	if layout == RFC3339 || layout == RFC3339Nano {
		if t, ok := parseRFC3339(value, Local); ok {
			return t, nil
		}
	}
	return parse(layout, value, UTC, Local)
}

// ParseInLocation is like Parse but differs in two important ways.