Because .strptime now returns POSIXct and not POSIXlt. I think it would be better to comment directly in the [commits](https://github.com/hadley/lubridate/pull/200/commits) section rather than in diff section. Then you can clearly see the difference in context. 

Unfortunately github cuts the diff midway when comment is in the middle of the diff. This diff chunk should appear as:

```
@@ -467,7 +465,7 @@ parse_date_time <- function(x, orders, tz = "UTC", truncated = 0, quiet = FALSE,
 .parse_date_time <- function(x, formats, locale, quiet, tz){
   ## recursive parsing
   out <- .strptime(x, formats[[1]], tz = tz)
-  na <- is.na(out$year)
+  na <- is.na(out)
   newx <- x[na]
 
   verbose <- getOption("lubridate.verbose")
```

So, if posible, when you comment on the code, could you please comment at the end of the relevant part of the diff chunk and indicate the line?