Cleanups and Fixes for Emergency Access

- Several cleanups and code optimizations for Emergency Access
- Fixed a race-condition regarding jobs for Emergency Access
- Some other small changes like `allow(clippy::)` removals

Fixes #2925

src/error.rs

@@ -168,7 +168,6 @@ impl<S> MapResult<S> for Option<S> {
     }
 }
 
-#[allow(clippy::unnecessary_wraps)]
 const fn _has_source<T>(e: T) -> Option<T> {
     Some(e)
 }