Auto merge of #5333 - dwijnand:warn-install-2018, r=matklad
authorbors <bors@rust-lang.org>
Wed, 11 Apr 2018 05:04:28 +0000 (05:04 +0000)
committerbors <bors@rust-lang.org>
Wed, 11 Apr 2018 05:04:28 +0000 (05:04 +0000)
commitb0d65af158bc2f2e4c1bc4e143a7dcd4b40af0f5
tree20cb4000f8b9061e663ecc003182c63d3f0c981c
parentf2d51b9dc9033ca9310bbefee1cf7b7d84e88e59
parentd8f78286f13dcdd9949829064716906f5edb9030
Auto merge of #5333 - dwijnand:warn-install-2018, r=matklad

Warn/error when cargo installing the cwd in 2015/2018

Fixes #5327

submitted for early review. feedback very welcome, I'm happy to iterate (and learn).