Auto merge of #1887 - alexcrichton:smaller-stacks, r=huonw
authorbors <bors@rust-lang.org>
Tue, 11 Aug 2015 00:14:27 +0000 (00:14 +0000)
committerbors <bors@rust-lang.org>
Tue, 11 Aug 2015 00:14:27 +0000 (00:14 +0000)
Apparently not actually emitting the calls to trace! saves a good deal of stack
space, fixing the overflow found in #1875.

Closes #1875


Trivial merge