MSRV is not accurate

[NZRosto]

Hi all,

The Minimum Supported Rust Version (MSRV) in Cargo.toml no longer appears to be accurate. This seems to be due to the use of BuildHasherDefault::new() here which was only introduced in Rust 1.85. Other issues may be present though.

Output of cargo-msrv:

  [Meta]   cargo-msrv 0.18.4  

Compatibility Check #1: Rust 1.75.0
  [FAIL]   Is incompatible 

Checking cosmic-text v0.14.1
   error[E0599]: no function or associated item named `new` found for struct `BuildHasherDefault` in the current scope
      --> src/font/fallback/mod.rs:112:75
       |
   112 |             HashMap::with_capacity_and_hasher(scripts.len(), BuildHasher::new());
       |                                                                           ^^^ function or associated item not found in `BuildHasherDefault<FxHasher>` 

   For more information about this error, try `rustc --explain E0599`.
   error: could not compile `cosmic-text` (lib) due to previous error

Crate source was found to be incompatible with Rust version '1.75.0' specified as MSRV in the Cargo manifest located at './Cargo.toml'

Possible solutions:

• Remove code that relies on a more recent version of Rust
• Upgrade the MSRV to 1.85 (Not my preferred option: I am required to use an older version of Rust for one of my projects, which is how I discovered this issue)

It may also be useful in the future to include a CI build on the MSRV to ensure there aren't any regressions (from what I can tell the CI jobs currently just run on the most recent version of Rust?).

Thanks everyone involved in this great project!

[jackpot51]

Releases as 0.14.2