specs           []event.Spec
	events          []raw.Event
	gens            []*Generation
	validTimestamps bool

	// Expectation state.
	bad      bool
	badMatch *regexp.Regexp
}

// NewTrace creates a new trace.
func NewTrace() *Trace {
	ver := version.Go122
	return &Trace{
		names:           event.Names(ver.Specs()),
		specs:           ver.Specs(),
		validTimestamps: true,
	}
}