Changed array size to be 40 for E0308

[rowanfr]

This changes the array size to be 40 within the test to resolve the error E0308. This will close #957

[rowanfr]

Now there's the issue of:

error[E0793]: reference to packed field is unaligned
    --> C:\Users\appveyor\.cargo\registry\src\index.crates.io-6f17d22bba15001f\ntapi-0.3.6\src\ntexapi.rs:2785:52
     |
2785 |         *tick_count.QuadPart_mut() = read_volatile(&(*USER_SHARED_DATA).u.TickCountQuad);
     |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = note: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses
     = note: creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
     = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)
error[E0793]: reference to packed field is unaligned
    --> C:\Users\appveyor\.cargo\registry\src\index.crates.io-6f17d22bba15001f\ntapi-0.3.6\src\ntexapi.rs:2809:25
     |
2809 |         ((read_volatile(&(*USER_SHARED_DATA).u.TickCountQuad)
     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = note: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses
     = note: creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
     = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)

I'm working to try to resolve it

[rowanfr]

The previous error was caused by an outdated Tokio dependency as shown here: My Rust project is broken all of the sudden (StackOverflow). After using cargo-edit for upgrade, the output is attached.
cargoupgrade.txt

The new error is:

error[E0491]: in type `&mut QueryTable<'me, Q, <Q as AsyncQueryFunction<'_, 'me>>::SendDb>`, reference has a longer lifetime than the data it references
   --> ~\.cargo\registry\src\index.crates.io-6f17d22bba15001f\gluon-salsa-0.15.2\src\lib.rs:696:28
    |
696 |     pub async fn get_async(&mut self, key: Q::Key) -> Q::Value {
    |                            ^^^^^^^^^
    |
note: the pointer is valid for the anonymous lifetime defined here
   --> ~\.cargo\registry\src\index.crates.io-6f17d22bba15001f\gluon-salsa-0.15.2\src\lib.rs:696:28
    |
696 |     pub async fn get_async(&mut self, key: Q::Key) -> Q::Value {
    |                            ^^^^^^^^^
note: but the referenced data is only valid for the lifetime `'me` as defined here
   --> ~\.cargo\registry\src\index.crates.io-6f17d22bba15001f\gluon-salsa-0.15.2\src\lib.rs:684:6
    |
684 | impl<'me, Q> QueryTable<'me, Q, <Q as QueryDb<'me>>::Db>
    |      ^^^

error[E0491]: in type `&mut QueryTable<'me, Q, <Q as AsyncQueryFunction<'_, 'me>>::SendDb>`, reference has a longer lifetime than the data it references
   --> ~\.cargo\registry\src\index.crates.io-6f17d22bba15001f\gluon-salsa-0.15.2\src\lib.rs:703:9
    |
703 |         &mut self,
    |         ^^^^^^^^^
    |
note: the pointer is valid for the anonymous lifetime defined here
   --> ~\.cargo\registry\src\index.crates.io-6f17d22bba15001f\gluon-salsa-0.15.2\src\lib.rs:703:9
    |
703 |         &mut self,
    |         ^^^^^^^^^
note: but the referenced data is only valid for the lifetime `'me` as defined here
   --> ~\.cargo\registry\src\index.crates.io-6f17d22bba15001f\gluon-salsa-0.15.2\src\lib.rs:684:6
    |
684 | impl<'me, Q> QueryTable<'me, Q, <Q as QueryDb<'me>>::Db>
    |      ^^^

error[E0491]: in type `&QueryTable<'me, Q, <Q as AsyncQueryFunction<'_, 'me>>::SendDb>`, reference has a longer lifetime than the data it references
   --> ~\.cargo\registry\src\index.crates.io-6f17d22bba15001f\gluon-salsa-0.15.2\src\lib.rs:714:18
    |
714 |     pub fn purge(&self)
    |                  ^^^^^
    |
note: the pointer is valid for the anonymous lifetime defined here
   --> ~\.cargo\registry\src\index.crates.io-6f17d22bba15001f\gluon-salsa-0.15.2\src\lib.rs:714:18
    |
714 |     pub fn purge(&self)
    |                  ^^^^^
note: but the referenced data is only valid for the lifetime `'me` as defined here
   --> ~\.cargo\registry\src\index.crates.io-6f17d22bba15001f\gluon-salsa-0.15.2\src\lib.rs:684:6
    |
684 | impl<'me, Q> QueryTable<'me, Q, <Q as QueryDb<'me>>::Db>
    |      ^^^

For more information about this error, try `rustc --explain E0491`.
error: could not compile `gluon-salsa` (lib) due to 3 previous errors
warning: build failed, waiting for other jobs to finish...

I'm working on that now

[rowanfr]

The previously mentioned issue was caused by an Internal Compilation Error (ICE) in rustc detailed in rust-lang/rust#112832 which has been resolved now thanks to rust-lang/rust#115559. This fork should be able to be merged to resolve the other mentioned issues.
After attempting to run cargo test --all-features --all-targets 3 tests don't pass, specifically:

running 5 tests
test [compile-fail] compile-fail\getable-reference.rs ... FAILED
test [compile-fail] compile-fail\store-ref.rs ... FAILED
test [compile-fail] compile-fail\get-reference.rs ... ok
test [compile-fail] compile-fail\run_expr_str_ref.rs ... ok
test [compile-fail] compile-fail\getable-reference-str.rs ... FAILED

but that seems to be somewhat deliberate given that their error message is included as a comment and their tested as "compile-fail". As a result I added the should_panic attribute to that particular batch of tests.
Lastly I changed appveyor to use the nightly rustc compiler instead of the stable version due to the ICE only being resolved in the nightly version.

[rowanfr]

IT COMPILED

Separately their are a few other issues that were shown in the compilation such as cloning static references, unnecessary muts, etc... but those can be resolved later. At this point I think this is ready to merge

[rowanfr]

I'm going to work on it a bit using my own appveyor so I don't continue to waste CI time