Rollup of 5 pull requests#65964

Closed

Centril wants to merge 15 commits into

rust-lang:masterfrom

Centril:rollup-5q5uj7c

Commits on Oct 26, 2019

Update comments re type parameter hack in object safety
mikeyhew
authored

Commits on Oct 28, 2019

Use structured suggestion for unnecessary bounds in type aliases
estebank
committed

Commits on Oct 29, 2019

Add lint for unnecessary parens around types
jack-t
committed

Commits on Oct 30, 2019