Auto merge of #5095 - tdbgamer:master, r=matklad
authorbors <bors@rust-lang.org>
Fri, 2 Mar 2018 18:43:11 +0000 (18:43 +0000)
committerbors <bors@rust-lang.org>
Fri, 2 Mar 2018 18:43:11 +0000 (18:43 +0000)
Issue #5087

* remove Workspace::current_manifest
* remove incorrect logging
* move empty check to Packages::into_package_id_specs
* add test case mentioned in issue


Trivial merge