cicada 1.2.2

A simple Bash-like Unix shell.
Documentation 
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extern crate time;
use std::process::Command;
use time::OffsetDateTime;

fn main() {
    match Command::new("git")
        .args(["rev-parse", "--short", "HEAD"])
        .output()
    {
        Ok(x) => {
            let git_hash = String::from_utf8_lossy(&x.stdout);
            println!("cargo:rustc-env=GIT_HASH={}", git_hash);
        }
        Err(_) => {
            println!("cargo:rustc-env=GIT_HASH=");
        }
    }

    match Command::new("git")
        .args(["rev-parse", "--abbrev-ref", "HEAD"])
        .output()
    {
        Ok(x) => {
            let git_branch = String::from_utf8_lossy(&x.stdout);
            println!("cargo:rustc-env=GIT_BRANCH={}", git_branch);
        }
        Err(_) => {
            println!("cargo:rustc-env=GIT_BRANCH=");
        }
    }

    match Command::new("git").args(["status", "--porcelain"]).output() {
        Ok(x) => {
            let git_status = String::from_utf8_lossy(&x.stdout);
            println!("cargo:rustc-env=GIT_STATUS={}", git_status.len());
        }
        Err(_) => {
            println!("cargo:rustc-env=GIT_STATUS=0");
        }
    }

    match Command::new("rustc").args(["-V"]).output() {
        Ok(x) => {
            let output = String::from_utf8_lossy(&x.stdout);
            println!("cargo:rustc-env=BUILD_RUSTC_VERSION={}", output);
        }
        Err(_) => {
            println!("cargo:rustc-env=BUILD_RUSTC_VERSION=");
        }
    }

    if let Ok(dt) = OffsetDateTime::now_local() {
        let dt_str = format!(
            "{:04}-{:02}-{:02} {:02}:{:02}:{:02}.{:03}",
            dt.year(),
            dt.month() as u8,
            dt.day(),
            dt.hour(),
            dt.minute(),
            dt.second(),
            dt.millisecond(),
        );
        println!("cargo:rustc-env=BUILD_DATE={}", dt_str);
    }
}