Matthias Krüger 64716825b0
Rollup merge of #92191 - jackh726:issue-89352, r=nikomatsakis
Prefer projection candidates instead of param_env candidates for Sized predicates

Fixes #89352

Also includes some drive by logging and verbose printing changes that I found useful when debugging this, but I can remove this if needed.

This is a little hacky - but imo no more than the rest of `candidate_should_be_dropped_in_favor_of`. Importantly, in a Chalk-like world, both candidates should be completely compatible.

r? ```@nikomatsakis```
2022-01-15 02:25:14 +01:00
..
2022-01-07 10:04:15 +01:00

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