Rollup of 5 pull requests#62659

Merged

bors merged 13 commits intorust-lang:masterfrom

Centril:rollup-90oz643

Jul 13, 2019

Commits on Jul 10, 2019

Add an AtomicCell abstraction
Zoxc
committed

Commits on Jul 11, 2019

Handle errors during error recovery gracefully
estebank
committed

Commits on Jul 13, 2019

Make `newtype_index` hygienic and use allow_internal_unstable
matthewjasper
committed
Make `register_[long_]diagnostics` hygienic
matthewjasper
committed
Rollup merge of #62577 - Zoxc:atomic-cell, r=matthewjasper
Centril
authored
Rollup merge of #62585 - pnkfelix:issue-60431-make-struct-tail-normalize-when-possible, r=eddyb
Centril
authored
Rollup merge of #62604 - estebank:unemitted-err-ice, r=pnkfelix
Centril
authored
Rollup merge of #62636 - alexcrichton:assert-build-cargo-once, r=Mark-Simulacrum
Centril
authored
Rollup merge of #62651 - matthewjasper:rustc-macro-hygiene, r=petrochenkov
Centril
authored