regression: trailing semicolon in macro used in expression

[BoxyUwU]

• https://crater-reports.s3.amazonaws.com/beta-1.91-2/beta-2025-09-21/gh/DPDmancul.srs/log.txt
• https://crater-reports.s3.amazonaws.com/beta-1.91-2/beta-2025-09-21/gh/olegnn.join/log.txt

[INFO] [stdout] error: trailing semicolon in macro used in expression position
[INFO] [stdout]   --> lib/src/rustify.rs:73:60
[INFO] [stdout]    |
[INFO] [stdout]  8 |   ("{}", $v: tt) => { assert_eq!("f (x) ;", $v.to_string()); }
[INFO] [stdout]    |                                                            ^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     Ok(res) => println!("{}", res),
[INFO] [stdout]    |                ------------------- in this macro invocation

[theemathas]

Presumably intended breakage in #144369

[fmease]

It's wasn't (re-)cratered.

@joshtriplett (#144369) do you have the time and inclination to submit downstream patches to the two regressed crates? Thanks in advance.