...1-dead
Remove dead code stemming from an old effects desugaring
CC rust-lang#132374, rust-lang#133443.
r? fee1-dead

Rollup of 10 pull requests
Successful merges:
 - #144066 (stabilize c-style varargs for sysv64, win64, efiapi, aapcs)
 - #145783 (add span to struct pattern rest (..))
 - #145961 (resolve: Avoid a regression from splitting prelude into two scopes)
 - #145962 (Ensure we emit an allocator shim when only some crate types need one)
 - #146064 (Add compiler error when trying to use concat metavar expr in repetitions)
 - #146067 (alloc: make Cow From impls const)
 - #146070 (rustdoc-search: skip loading unneeded fnData)
 - #146089 (fix a constness ordering bug in rustfmt)
 - #146094 (Make `Parser::parse_for_head` public for rustfmt usage)
 - #146102 (Remove dead code stemming from an old effects desugaring)
r? `@ghost`
`@rustbot` modify labels: rollup

...1-dead
Remove dead code stemming from an old effects desugaring
CC rust-lang#132374, rust-lang#133443.
r? fee1-dead

Rollup of 9 pull requests
Successful merges:
 - #145783 (add span to struct pattern rest (..))
 - #145961 (resolve: Avoid a regression from splitting prelude into two scopes)
 - #145962 (Ensure we emit an allocator shim when only some crate types need one)
 - #146064 (Add compiler error when trying to use concat metavar expr in repetitions)
 - #146067 (alloc: make Cow From impls const)
 - #146070 (rustdoc-search: skip loading unneeded fnData)
 - #146089 (fix a constness ordering bug in rustfmt)
 - #146094 (Make `Parser::parse_for_head` public for rustfmt usage)
 - #146102 (Remove dead code stemming from an old effects desugaring)
r? `@ghost`
`@rustbot` modify labels: rollup

Rollup of 14 pull requests
Successful merges:
 - #144066 (stabilize c-style varargs for sysv64, win64, efiapi, aapcs)
 - #145783 (add span to struct pattern rest (..))
 - #146034 (Update target spec metadata of Arm64EC Windows and Trusty targets)
 - #146064 (Add compiler error when trying to use concat metavar expr in repetitions)
 - #146070 (rustdoc-search: skip loading unneeded fnData)
 - #146088 (constify impl Try for ControlFlow)
 - #146089 (fix a constness ordering bug in rustfmt)
 - #146091 (fix rustdoc `render_call_locations` panicking because of default span `DUMMY_SP` pointing at non local-source file)
 - #146094 (Make `Parser::parse_for_head` public for rustfmt usage)
 - #146102 (Remove dead code stemming from an old effects desugaring)
 - #146115 (Add maintainer for VxWorks)
 - #146116 (Adjust issue-118306.rs test after LLVM change)
 - #146117 (Fix search index generation)
 - #146118 (improve process::abort rendering in Miri backtraces)
r? `@ghost`
`@rustbot` modify labels: rollup

Rollup merge of #146102 - fmease:rm-dead-eff-code-iii, r=fee1-dead
Remove dead code stemming from an old effects desugaring
CC #132374, #133443.
r? fee1-dead

Rollup of 14 pull requests
Successful merges:
 - rust-lang/rust#144066 (stabilize c-style varargs for sysv64, win64, efiapi, aapcs)
 - rust-lang/rust#145783 (add span to struct pattern rest (..))
 - rust-lang/rust#146034 (Update target spec metadata of Arm64EC Windows and Trusty targets)
 - rust-lang/rust#146064 (Add compiler error when trying to use concat metavar expr in repetitions)
 - rust-lang/rust#146070 (rustdoc-search: skip loading unneeded fnData)
 - rust-lang/rust#146088 (constify impl Try for ControlFlow)
 - rust-lang/rust#146089 (fix a constness ordering bug in rustfmt)
 - rust-lang/rust#146091 (fix rustdoc `render_call_locations` panicking because of default span `DUMMY_SP` pointing at non local-source file)
 - rust-lang/rust#146094 (Make `Parser::parse_for_head` public for rustfmt usage)
 - rust-lang/rust#146102 (Remove dead code stemming from an old effects desugaring)
 - rust-lang/rust#146115 (Add maintainer for VxWorks)
 - rust-lang/rust#146116 (Adjust issue-118306.rs test after LLVM change)
 - rust-lang/rust#146117 (Fix search index generation)
 - rust-lang/rust#146118 (improve process::abort rendering in Miri backtraces)
r? `@ghost`
`@rustbot` modify labels: rollup