Rollup of 9 pull requests#92915

Merged

bors merged 26 commits intorust-lang:masterfrom

matthiaskrgr:rollup-pxxk8jp

Jan 15, 2022

Commits on Dec 22, 2021

When obligation is a sized predicate, prefer projection or object candidates instead of param_env candidates
jackh726
committed

Commits on Dec 29, 2021

Extend const_convert to rest of blanket core::convert impls
clarfonthey
committed

Commits on Jan 6, 2022

Add `#[track_caller]` to `mirbug`
inquisitivecrystal
committed

Commits on Jan 9, 2022

export `tcp::IntoIncoming`
ibraheemdev
authored

Commits on Jan 10, 2022

Use pre-interned symbols in a couple of places
bjorn3
committed

Commits on Jan 13, 2022

Commits on Jan 14, 2022

Commits on Jan 15, 2022