Requests with the same ID interleaving in varnishlog output

[Russell Harmon]

I'm writing a parser for varnishlog output and am seeing some odd behavior.
See the log here:
https://gist.github.com/eatnumber1/1dc55700324d9ee4dfb4which shows a
request start with xid 1254156398, later followed by a
request end with xid 1254156353 (which is the xid of the request before
1254156398), later (not shown) followed by the ReqEnd of 1254156353. What's
the deal? How can I tell what request all the lines with id 7 are for?

--
Russell Harmon
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