Rollup of 6 pull requests#83798

Closed

Dylan-DPC-zz wants to merge 14 commits intorust-lang:masterfrom

Dylan-DPC-zz:rollup-9i76zq7

Commits on Feb 24, 2021

Constify methods of `std::net::SocketAddr`, `SocketAddrV4` and `SocketAddrV6`
CDirkx
committed

Commits on Mar 28, 2021

Avoid sorting by DefId for `necessary_variants()`
jyn514
committed

Commits on Apr 3, 2021