See rust-lang#91867 for more information.

…ult-methods, r=oli-obk

Mark defaulted `PartialEq`/`PartialOrd` methods as const

WIthout it, `const` impls of these traits are unpleasant to write. I think this kind of change is allowed now. although it looks like it might require some Miri tweaks. Let's find out.

r? ```@fee1-dead```

…estebank

Improve suggestion to change struct field to &mut

r? ``@estebank``

Now displays a proper underline style suggestion instead of including the code change inline with the message.

Remove `in_band_lifetimes` for `rustc_passes`

rust-lang#91867

…=lnicola

⬆️ rust-analyzer

r? ```@ghost```

…aflow, r=nagisa

Remove `in_band_lifetimes` from `rustc_mir_dataflow`

See rust-lang#91867 for more information.

…d, r=kennytm

Revert "socket ancillary data implementation for dragonflybsd."

Reverts rust-lang#91553

Update stdlib to the 2021 edition

progress towards rust-lang#88638

I couldnt find a way to run the 2018 style panic tests against 2018 so I just deleted them, maybe theres a way to do it that I missed though?