Rollup of 6 pull requests#59991

Merged

bors merged 15 commits intorust-lang:masterfrom

Centril:rollup-bqxt4w3

Apr 15, 2019

Commits on Apr 6, 2019

Add summary and reference to Rust trademark guide
agnxy
committed

Commits on Apr 8, 2019

Add must_use annotations to Result::is_ok and is_err

alex
authored and
Alex Gaynor
committed

Commits on Apr 12, 2019

Commits on Apr 14, 2019

Commits on Apr 15, 2019