}
			}

			// 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)
			}
		}
	})