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Convert to geo-types, doc example doesn't compile #274

@Nathan-M-code

Description

@Nathan-M-code

This example doesn't compile with:

geo = { version = "0.32.0", features = ["proj", "serde"] }
geojson = { version = "1.0.0", features = ["geo-types"] }
geo-types = { version = "0.7.18", features = ["serde"] }

rustc 1.91.1

    // This example requires the `geo-types` feature
    use geo_types::Geometry;
    use geojson::GeoJson;
    use std::convert::TryFrom;
    use std::str::FromStr;

    let geojson_str = r#"
    {
    "type": "Feature",
    "properties": {},
    "geometry": {
    "type": "Point",
    "coordinates": [1.0, 2.0]
    }
    }
    "#;
    let geojson = GeoJson::from_str(geojson_str).unwrap();
    // Turn the GeoJSON string into a geo_types Geometry
    let geom = geo_types::Geometry::<f64>::try_from(geojson).unwrap();
error[E0277]: the trait bound `geo_types::Geometry: TryFrom<GeoJson>` is not satisfied
  --> src\main.rs:27:16
   |
27 |     let geom = geo_types::Geometry::<f64>::try_from(geojson).unwrap();
   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `From<GeoJson>` is not implemented for `geo_types::Geometry`        
   |
   = help: the following other types implement trait `From<T>`:
             `geo_types::Geometry<T>` implements `From<geo_types::Line<T>>`
             `geo_types::Geometry<T>` implements `From<geo_types::LineString<T>>`
             `geo_types::Geometry<T>` implements `From<geo_types::MultiLineString<T>>`
             `geo_types::Geometry<T>` implements `From<geo_types::MultiPoint<T>>`
             `geo_types::Geometry<T>` implements `From<geo_types::MultiPolygon<T>>`
             `geo_types::Geometry<T>` implements `From<geo_types::Point<T>>`
             `geo_types::Geometry<T>` implements `From<geo_types::Polygon<T>>`
             `geo_types::Geometry<T>` implements `From<geo_types::Rect<T>>`
             `geo_types::Geometry<T>` implements `From<geo_types::Triangle<T>>`
   = note: required for `GeoJson` to implement `Into<geo_types::Geometry>`
   = note: required for `geo_types::Geometry` to implement `TryFrom<GeoJson>`

I dont really understand because the TryFrom implementations seems ok in the source code

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