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: mod.rs
    path of file: ./repos/Replibyte/replibyte/src/migration
    
    the code of the file until where you have to start completion: use std::io::{Error, ErrorKind};
use std::str::FromStr;

use log::info;

use crate::datastore::Datastore;
use crate::migration::rename_backups_to_dumps::RenameBackupsToDump;
use crate::migration::update_version_number::UpdateVersionNumber;
use crate::utils::get_replibyte_version;

pub mod rename_backups_to_dumps;
pub mod update_version_number;

#[derive(Debug, PartialEq, PartialOrd)]
pub struct Version {
    major: u8,
    minor: u8,
    patch: u8,
}

impl FromStr for Version {
    type Err = Error;

    fn from_str(v: &str) -> Result<Self, Self::Err> {
        l
    
    fn from_str(v: &str) -> Result<Self, Self::Err> {
        let numbers = v.split_terminator('.').collect::<Vec<&str>>();

        match numbers.len() {
            3 => {
                // unwrap is safe here as we know we have 3 items in vec.
                let major = parse_str_to_u8(numbers.get(0).unwrap())?;
                let minor = parse_str_to_u8(numbers.get(1).unwrap())?;
                let patch = parse_str_to_u8(numbers.get(2).unwrap())?;

                Ok(Self {
                    major,
                    minor,
                    patch,
                })
            }
            _ => Err(Error::new(
                ErrorKind::Other,
                format!("migration: version number '{}' is invalid, must have 'major.minor.patch' format", v),
            )),
        }
    }