Auto merge of #155339 - JonathanBrouwer:rollup-2nyGW0a, r=JonathanBrouwer

Rollup of 5 pull requests

Successful merges:

 - rust-lang/rust#155331 (Reformat `top_level_options!` and `options!` macro declarations)
 - rust-lang/rust#155332 (bump std libc to `0.2.185`)
 - rust-lang/rust#155286 (attribute cleanup: rustc_confusables)
 - rust-lang/rust#155306 (`CValue::zst()` - add missing "ZST" in docs)
 - rust-lang/rust#155311 (various small `rustc_expand` cleanups)

Author: bors

crates/proc-macro-srv/src/dylib/proc_macros.rs

@@ -7,7 +7,7 @@ pub(crate) struct ProcMacros([bridge::client::ProcMacro]);
 
 impl From<bridge::PanicMessage> for crate::PanicMessage {
     fn from(p: bridge::PanicMessage) -> Self {
-        Self { message: p.as_str().map(|s| s.to_owned()) }
+        Self { message: p.into_string() }
     }
 }