Auto merge of #2044 - alexcrichton:fingerprint-better, r=brson
authorbors <bors@rust-lang.org>
Fri, 9 Oct 2015 17:48:30 +0000 (17:48 +0000)
committerbors <bors@rust-lang.org>
Fri, 9 Oct 2015 17:48:30 +0000 (17:48 +0000)
This helps diagnose "why did this rebuild" situations so not only the mtime is
known but also the file in question.


Trivial merge