Rollup of 7 pull requests#48040

Merged

bors merged 17 commits intorust-lang:masterfrom

Feb 6, 2018

Commits on Jan 29, 2018

Document std::os::raw.
Clar Charr
committed
Revisions suggested in comments
Clar Charr
committed
Reworded to avoid fuzziness, mention ! in c_void docs.
Clar Charr
committed

Commits on Feb 4, 2018

libtest: Replace panics with error messages
Gilad Naaman
committed

Commits on Feb 5, 2018

Commits on Feb 6, 2018