stack/stack.go
func (c *Call) FullSrcLine() string {
	return fmt.Sprintf("%s:%d", c.SrcPath, c.Line)
}
func (c *Call) FullSrcLine() string {
	return fmt.Sprintf("%s:%d", c.SrcPath, c.Line)
}
// FullSrcLine returns "/path/to/source.go:line".
//
// This file path is mutated to look like the local path.