Suricata

Bendy 0.4.0 has been released, but has an MSRV of 1.85.

And it fails to compile for me, as well as bendy 0.5

error[E0433]: failed to resolve: use of unresolved module or unlinked crate `std`
  --> /Users/catena/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/bendy-0.4.0/src/state_tracker/state.rs:96:33
   |
96 |                     MapKey(Some(std::mem::replace(label, dummy.into())));
   |                                 ^^^ use of unresolved module or unlinked crate `std`
   |
   = help: if you wanted to use a crate named `std`, use `cargo add std` to add it to your `Cargo.toml`
help: consider importing this module
   |
1  + use core::mem;
   |
help: if you import `mem`, refer to it directly
   |
96 -                     MapKey(Some(std::mem::replace(label, dummy.into())));
96 +                     MapKey(Some(mem::replace(label, dummy.into())));