Rollup of 8 pull requests#83225

Merged

bors merged 22 commits intorust-lang:masterfrom

JohnTitor:rollup-4hnuhb8

Mar 17, 2021

Commits on Mar 6, 2021

(std::net::parser): Fix capitalization of IP versions
pierwill
committed

Commits on Mar 14, 2021

Commits on Mar 15, 2021

Commits on Mar 17, 2021