Rollup of 7 pull requests

[matthiaskrgr]

Successful merges:

• Split out async_fn_in_trait into a separate feature #100734 (Split out async_fn_in_trait into a separate feature)
• Migrated the rustc_passes annotation without effect diagnostic infrastructure #101815 (Migrated the rustc_passes annotation without effect diagnostic infrastructure)
• Don't duplicate region names for late-bound regions in print of Binder #101996 (Don't duplicate region names for late-bound regions in print of Binder)
• Distribute rust-docs-json via rustup. #102042 (Distribute rust-docs-json via rustup.)
• rustdoc: remove unnecessary max-width on headers #102066 (rustdoc: remove unnecessary max-width on headers)
• Deduplicate two functions that would soon have been three #102095 (Deduplicate two functions that would soon have been three)
• Set 'exec-env:RUST_BACKTRACE=0' in const-eval-select tests #102104 (Set 'exec-env:RUST_BACKTRACE=0' in const-eval-select tests)

Failed merges:

r? @ghost
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