costmap 0.2.0

2D costmaps, occupancy grids, and raycasting for robotics navigation - a Nav2 alternative in pure Rust
Documentation 
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use thiserror::Error;

#[derive(Debug, Error)]
pub enum VoxelError {
    #[error("io error: {0}")]
    Io(#[from] std::io::Error),
    #[error("yaml error: {0}")]
    Yaml(#[from] serde_yaml::Error),
    #[error("image error: {0}")]
    Image(#[from] image::ImageError),
    #[error("out of bounds: {0}")]
    OutOfBounds(String),
    #[error("invalid metadata: {0}")]
    InvalidMetadata(String),
}