Rollup of 14 pull requests#55746

Merged

bors merged 31 commits intorust-lang:masterfrom

Nov 7, 2018

Commits on Oct 26, 2018

Slight copy-editing for `std::cell::Cell` docs
goffrie
committed

Commits on Oct 28, 2018

Commits on Oct 30, 2018

Don't print opt fuel messages to stdout because it breaks Rustbuild
wesleywiser
committed
Make `process_obligations`' computation of `completed` optional.
nnethercote
committed
Fix feature gate only being checked on first repr attr.
bitshifter
committed

Commits on Nov 5, 2018

Commits on Nov 7, 2018