Auto merge of #5222 - AdamNiederer:patch-1, r=matklad
authorbors <bors@rust-lang.org>
Thu, 22 Mar 2018 09:01:37 +0000 (09:01 +0000)
committerbors <bors@rust-lang.org>
Thu, 22 Mar 2018 09:01:37 +0000 (09:01 +0000)
Add docstrings to CleanOptions


Trivial merge