Rollup of 8 pull requests

Successful merges:

 - rust-lang#119305 (Add `AsyncFn` family of traits)
 - rust-lang#119389 (Provide more context on recursive `impl` evaluation overflow)
 - rust-lang#120062 (llvm: change data layout bug to an error and make it trigger more)
 - rust-lang#120099 (linker: Refactor library linking methods in `trait Linker`)
 - rust-lang#120201 (Bump some deps with syn 1.0 dependencies)
 - rust-lang#120230 (Assert that a single scope is passed to `for_scope`)
 - rust-lang#120278 (Remove --fatal-warnings on wasm targets)
 - rust-lang#120292 (coverage: Dismantle `Instrumentor` and flatten span refinement)

r? `@ghost`
`@rustbot` modify labels: rollup

…iaskrgr

Rollup of 10 pull requests

Successful merges:

 - rust-lang#119305 (Add `AsyncFn` family of traits)
 - rust-lang#119389 (Provide more context on recursive `impl` evaluation overflow)
 - rust-lang#119895 (Remove `track_errors` entirely)
 - rust-lang#120230 (Assert that a single scope is passed to `for_scope`)
 - rust-lang#120278 (Remove --fatal-warnings on wasm targets)
 - rust-lang#120292 (coverage: Dismantle `Instrumentor` and flatten span refinement)
 - rust-lang#120315 (On E0308 involving `dyn Trait`, mention trait objects)
 - rust-lang#120317 (pattern_analysis: Let `ctor_sub_tys` return any Iterator they want)
 - rust-lang#120318 (pattern_analysis: Reuse most of the `DeconstructedPat` `Debug` impl)
 - rust-lang#120325 (rustc_data_structures: use either instead of itertools)

r? `@ghost`
`@rustbot` modify labels: rollup