You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: dot_cargo.rs
    path of file: ./repos/cargo-mobile/src
    
    the code of the file until where you have to start completion: use crate::{
    config::app::App,
    util::cli::{Report, Reportable},
};
use serde::{Deserialize, Serialize};
use std::{collections::BTreeMap, fs, io, path::PathBuf};
use toml::Value;

#[derive(Debug)]
pub enum LoadError {
    DirCreationFailed {
        path: PathBuf,
        cause: io::Error,
    },
    MigrateFailed {
        from: PathBuf,
        to: PathBuf,
        cause: io::Error,
    },
    ReadFailed {
        path: PathBuf,
        cause: io::Error,
    },
    DeserializeFailed {
        path: PathBuf,
        cause: toml::de::Error,
    },
}

impl Reportable for LoadError {
    fn report(&self) -> Report {
        match self {
            Self::DirC
    
    fn report(&self) -> Report {
        match self {
            Self::DirCreationFailed { path, cause } => Report::error(
                format!("Failed to create \".cargo\" directory at {:?}", path),
                cause,
            ),
            Self::MigrateFailed { from, to, cause } => Report::error(
                format!(
                    "Failed to rename cargo config from old style {:?} to new style {:?}",
                    from, to
                ),
                cause,
            ),
            Self::ReadFailed { path, cause } => Report::error(
                format!("Failed to read cargo config from {:?}", path),
                cause,
            ),
            Self::DeserializeFailed { path, cause } => Report::error(
                format!("Failed to deserialize cargo config at {:?}", path),
                cause,
            ),
        }
    }