Failed local installation due to mismatched types compilation error

[quietlychris]

Hello,

I'm currently running into issues trying to install Martin locally using cargo install.

error[E0308]: mismatched types
  --> /home/chrism/.cargo/registry/src/index.crates.io-6f17d22bba15001f/martin-0.13.0/src/fonts/mod.rs:83:39
   |
83 |         if face.get_char_index(cp) != 0 {
   |            -----------------------    ^ expected `Result<NonZero<u32>, Error>`, found integer
   |            |
   |            expected because this is `std::result::Result<std::num::NonZero<u32>, pbf_font_tools::freetype::Error>`
   |
   = note: expected enum `std::result::Result<std::num::NonZero<u32>, pbf_font_tools::freetype::Error>`
              found type `{integer}`

I've tested this on rustc 1.78.0 stable and nightly, and on Martin v0.13, 0.12, and 0.11 on a fresh Ubuntu 22.04 install (via cargo install --version=^0.11/12/13 martin), all of which are thowing the same error. This appears to be the same sort of error mode reported at huggingface/text-generation-inference#840 , although I don't believe Martin uses the tokenizers crate and I had trouble trying to find which dependency version might be the cause (maybe pbf_font_tools?).

Thanks for your consideration, and I can provide any add'l information, just let me know!

[nyurik]

Yep, a dependency crate was released that broke semver - I filed a bug PistonDevelopers/freetype-rs#272

Use cargo install martin --locked or better yet cargo binstall martin (you will need to install binstall)

To reproduce this issue locally:

git checkout v0.13.0
cargo update
cargo check

I will update the docs to mention the --locked param.