[beta] backport rollup#107071

Merged

bors merged 9 commits intorust-lang:betafrom

Mark-Simulacrum:beta-next

Jan 20, 2023

Commits on Jan 19, 2023

Revert "Make nested RPITIT inherit the parent opaque's generics." and adjust test

compiler-errors
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Mark-Simulacrum
committed
fix `SyncSender` spinning behavior

ibraheemdev
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Mark-Simulacrum
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add `SyncSender::send_timeout` test

ibraheemdev
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Mark-Simulacrum
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rework and document backoff behavior of `sync::mpsc`

ibraheemdev
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Mark-Simulacrum
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rustdoc: fix outdated lint section of the book

notriddle
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Mark-Simulacrum
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Do not filter substs in `remap_generic_params_to_declaration_params`.

cjgillot
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Mark-Simulacrum
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Correct detection of elided lifetimes in impl-trait.

cjgillot
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Mark-Simulacrum
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Bump rust-installer
Mark-Simulacrum
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Don't panic on stable since miri is not available there

oli-obk
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Mark-Simulacrum
committed