`last_error` can not be found in scope for Android target

[barhaterahul]

When LibAFL is compiled for Android target last_error can not be found in the scope

$ cargo ndk -t arm64-v8a build --release
......
......
error[E0425]: cannot find value `last_error` in this scope
   --> /private/tmp/LibAFL/crates/libafl_frida/src/asan/asan_rt.rs:168:26
    |
168 |         LastErrorGuard { last_error }
    |                          ^^^^^^^^^^ not found in this scope

error[E0560]: struct `LastErrorGuard` has no field named `last_error`
   --> /private/tmp/LibAFL/crates/libafl_frida/src/asan/asan_rt.rs:168:26
    |
168 |         LastErrorGuard { last_error }
    |                          ^^^^^^^^^^ `LastErrorGuard` does not have this field
    |
    = note: all struct fields are already assigned

error: unused variable: `process`
   --> /private/tmp/LibAFL/crates/libafl_frida/src/asan/asan_rt.rs:624:13
    |
624 |         let process = Process::obtain(gum);
    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_process`
    |
    = note: `-D unused-variables` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(unused_variables)]`

Some errors have detailed explanations: E0425, E0560.
For more information about an error, try `rustc --explain E0425`.
error: could not compile `libafl_frida` (lib) due to 3 previous errors

Also process does not fit for Android attribute macro, and it is recognised as unused.
I could not find any way to quickly use errno for Android.