Fix Rust 1.83 clippy errors

[bgurney-rh]

Related: stratis-storage/project#740

[bgurney-rh]

I believe this is blocked by a change that's needed via jbaublitz/per-thread-mutex#11.

[bgurney-rh]

OK, I think this is ready.

[mulkieran]

We don't really want to bump the mutex dependency except on a version update. Try the following patch instead:

diff --git a/src/lib.rs b/src/lib.rs
index bee3a6b8..0679ad57 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -31,6 +31,7 @@ mod keyslot;
 mod log;
 mod luks2;
 mod mem;
+#[allow(clippy::all)]
 #[cfg(feature = "mutex")]
 mod mutex;
 mod runtime;

[bgurney-rh]

OK, that works. I'm dropping the submodule patch, and adding this update to src/lib.rs.