Auto merge of #5075 - ehuss:report-test-ws, r=matklad
authorbors <bors@rust-lang.org>
Mon, 26 Feb 2018 15:31:55 +0000 (15:31 +0000)
committerbors <bors@rust-lang.org>
Mon, 26 Feb 2018 15:31:55 +0000 (15:31 +0000)
Fix test error hint in a workspace.

This adds "-p NAME" to the hint on how to re-run a test when it fails if it is
inside a workspace.

Fixes #5053


Trivial merge