regression: mismatched types (panic info hook stuff)

[BoxyUwU]

• https://crater-reports.s3.amazonaws.com/beta-1.81-2/beta-2024-07-26/reg/yacurses-0.2.4/log.txt
• https://crater-reports.s3.amazonaws.com/beta-1.81-2/beta-2024-07-26/gh/SNIAPA.screeps-ballerbot/log.txt
• https://crater-reports.s3.amazonaws.com/beta-1.81-2/beta-2024-07-26/reg/crashy-0.3.0/log.txt
• https://crater-reports.s3.amazonaws.com/beta-1.81-2/beta-2024-07-26/reg/static_init-1.0.3/log.txt
• https://crater-reports.s3.amazonaws.com/beta-1.81-2/beta-2024-07-26/reg/tezos-smart-rollup-entrypoint-0.2.2/log.txt
• https://crater-reports.s3.amazonaws.com/beta-1.81-2/beta-2024-07-26/gh/WalrusGumboot.linen/log.txt
• https://crater-reports.s3.amazonaws.com/beta-1.81-2/beta-2024-07-26/gh/pokir.learn-rust-snake/log.txt
• https://crater-reports.s3.amazonaws.com/beta-1.81-2/beta-2024-07-26/reg/tezos-smart-rollup-0.2.2/log.txt
• https://crater-reports.s3.amazonaws.com/beta-1.81-2/beta-2024-07-26/reg/tmuxstatus-1.0.1/log.txt

[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:122:36
[INFO] [stdout]     |
[INFO] [stdout] 122 |       std::panic::set_hook(replace(&mut self.old_hook, Box::new(|_| {})));
[INFO] [stdout]     |                            ------- ^^^^^^^^^^^^^^^^^^ expected `PanicHookInfo<'_>`, found `PanicInfo<'_>`
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            arguments to this function are incorrect
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected mutable reference `&mut Box<dyn for<'a, 'b> std::ops::Fn(&'a PanicHookInfo<'b>) + Send + Sync>`
[INFO] [stdout]                found mutable reference `&mut Box<(dyn for<'a, 'b> std::ops::Fn(&'a PanicInfo<'b>) + Send + Sync + 'static)>`

[compiler-errors]

Regressed in #115974, cc @m-ou-se @Amanieu

[workingjubilee]

• crater run in Split core's PanicInfo and std's PanicInfo #115974 (comment)
• recommendation to accept in Split core's PanicInfo and std's PanicInfo #115974 (comment)
• FCP'd in Split core's PanicInfo and std's PanicInfo #115974 (comment)

[apiraino]

WG-prioritization assigning priority (Zulip discussion).

@rustbot label -I-prioritize +P-high

[Amanieu]

We discussed this in the libs meeting today. This is more breakage than we expected when we originally landed this, so we're going to revert this for now in beta and discuss ways to land this without as much breakage (possibly via an edition change).

[VorpalBlade]

possibly via an edition change

At this point that means this will be blocked for another 3 years though.