warning: direct implementation of `ToString`
  --> crates/mapdiffbot2/src/rendering.rs:55:1
   |
55 | / impl ToString for BoundingBox {
56 | |     fn to_string(&self) -> String {
57 | |         format!(
58 | |             "({}, {}) -> ({}, {})",
...  |
61 | |     }
62 | | }
   | |_^
   |
   = help: prefer implementing `Display` instead
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#to_string_trait_impl
   = note: `#[warn(clippy::to_string_trait_impl)]` on by default

warning: use of deprecated type alias `image::io::Reader`: this type has been moved and renamed to image::ImageReader
   --> crates/mapdiffbot2/src/rendering.rs:585:28
    |
585 |     let image = image::io::Reader::new(std::io::Cursor::new(bytes))
    |                            ^^^^^^
    |
    = note: `#[warn(deprecated)]` on by default